Phase 1, Engineering Validation

A Proposal for
Eyeson Life Ltd

Inflatable Marine Safety Locator Device

4–6 Weeks

USD $6,000

Provisional, subject to a pre-engagement call with Mark Jacobs

01 — Background

Eyeson Life Ltd & the Engineering Validation Engagement

Eyeson Life Ltd is a United Kingdom company founded by David West, a retired consultant interventional radiologist with prior experience founding and exiting a UK medical services business. Eyeson Life is the company's first product venture. The Eyeson Life device is a wearable inflatable marine safety locator designed to assist the detection and recovery of persons who have fallen from a watercraft or who are otherwise in distress on the water.

The product is a CO2-inflated spheroidal structure formed from three interconnected hoops of RF-welded polyurethane-coated polyamide fabric. The device is worn on the user as a waist belt with the deflated hoops and a compressed CO2 cylinder housed inside a folded pouch. Activation, either manual via a pull-cord mechanism or automatic via an immersion sensor, releases the compressed CO2 to inflate the three hoops, producing a high-visibility spheroidal structure that sits directly above the user. Because the inflated structure is attached to the user rather than tethered alongside them, the device and the person in distress cannot drift apart, which is the central commercial claim of the product. Optional auxiliary features include fabric ribbons, radar reflectors, and a flashing SOS LED with light-sensor activation.

A European patent application was filed in March 2026 (application number EP26166744.8) and covers the spheroidal interconnected-tube configuration, the direct user attachment, and the inflation, visibility, and packaging mechanisms. The patent specification provides a detailed written and illustrated schema for the product, including material selection (polyurethane-coated polyamide fabric of the Riverseal class), tube internal diameter (26 to 28 mm), hoop length (approximately 6 m), node geometry, CO2 internal pressure target (approximately 241 kPa), pressure-control valve architecture, and auxiliary inflation provisions.

David has built four to five physical prototype iterations by hand. A working prototype exists and is held in the United Kingdom. No CAD files, no 3D model, and no formal bill of materials have been produced to date. The patent specification, while detailed, is a legal document describing the invention and is not a substitute for production-intent engineering drawings.

The original commercial enquiry was for the manufacture of fifty units for testing, followed by a first production run of ten thousand. C2W and Shield Works have been engaged to take the product from its current prototype state to a manufacturable specification, qualify the supply chain, and define the pathway from prototype validation through to mass production. This proposal covers Phase 1 of that programme, titled Engineering Validation, following the NDA already in place between the parties and the discovery call held on 30 April 2026.

This proposal is marked provisional. The scope and fee set out below are firm. A pre-engagement call between Mark Jacobs, CEO of C2W Group and Shield Works, and David West is proposed as a no-cost gate before formal acceptance. The purpose of that call is to align on commercial intent and route to market before Phase 1 begins, so that the Phase 1 output is built on the right starting assumptions. See Section 8 for the suggested sequence.

02 — Our Preliminary Read on the Product

What Phase 1 Will Focus On

Ahead of Phase 1, the Shield Works R&D team has reviewed the patent specification, the discovery call notes, and the photographs of the existing prototype. The physical prototype itself will be reviewed in detail on receipt at Shield Works. The following is not the full Phase 1 output, but it is the position from which the engineering work will start. Sharing it now signals where the focus will be.

2.1 Where the engineering work is actually concentrated

Five engineering areas drive most of how a wearable CO2-inflated marine safety device performs, costs, and scales. These are the areas Phase 1 will prioritise.

Inflatable architecture and CO2 charge specification

This is the central technical question on the product and is set up as a standalone engineering workstream. The patent specification gives the target geometry, the target internal pressure, and the broad material direction, but the engineering work to translate that into a production-intent specification is not yet done. Tube diameter and material selection against inflation pressure, CO2 cylinder sizing against total internal volume, valve and pressure-control architecture to manage initial pressure release and prevent over-pressure at the nodes, weld strategy at the polar and equatorial nodes, packed pouch volume against waist-belt wearability, manual and immersion-sensor activation mechanisms, and the integration of the SOS LED and visibility aids: these are the questions that determine whether the device can be manufactured to specification and at a target unit cost. This workstream also covers early failure-mode review across the device, including weld leakage, over-pressure protection, partial deflation behaviour, immersion sensor reliability, manual activation force and pull length, packed pouch deployment dynamics, user attachment security, in-water visibility, and the service or re-arming process after activation.

Soft goods construction and the RF welding process

RF welding of polyurethane-coated polyamide fabric is a well-established manufacturing process used across the marine, medical, and inflatable products sectors. Shield Works has live experience of RF-welded soft goods construction through other client programmes. The Phase 1 work will define the weld geometry at the nodes, the welding parameters appropriate for the selected fabric, and the supplier engagement strategy against our qualified network.

CO2 inflation system and pressurised cylinder integration

Compressed CO2 cylinders for personal flotation and inflation devices are a regulated product category with a mature supply base. The engineering decisions in Phase 1 cover cylinder volume selection, valve specification, the pressure-control architecture at the inlet, secondary inflation provision (hand pump or mouthpiece) for top-up after partial deflation, and the mechanical interface between the cylinder, the activation mechanism, and the inflatable structure. The pressurised cylinder element is a known regulated input and is treated as part of the supplier engineering shortlist.

Auxiliary electronics and visibility aids

The electronic content of the device is intentionally light. An immersion sensor for auto-activation, a flashing SOS LED with light-sensor control, and a battery to drive the LED are the three electronic sub-systems. There is no firmware development, no communications module, no application, and no software platform on the product as currently scoped for the marine market. The Phase 1 work will specify the electronic sub-assemblies against off-the-shelf components and integrate them into the overall device architecture and packed-pouch envelope.

Certification pathway mapping

The Eyeson Life device sits adjacent to the established life jacket and personal flotation aid categories but is not itself a buoyancy aid. The ISO 12402 family of personal flotation device standards is likely to be partially relevant. SOLAS and MED requirements become relevant if the product is targeted at commercial marine use in future. Phase 1 will deliver an initial certification pathway map drawing on the patent specification, the intended use case (recreational marine, UK and EU primary), and input from a specialist testing and certification partner. The full certification route will be confirmed at the Phase 2 development stage with formal engagement of the testing partner. The Phase 1 output is directional, not definitive.

03 — Volume & Timeline Targets

Programme Targets

The following reflects current working assumptions drawn from the provided brief, the discovery call notes, and the original enquiry. The pilot and production volumes will be validated through Phase 1.

Item	Detail
Engineering Prototype Quantity	Initial prototypes for design validation, quantity to be confirmed in the Development Roadmap
Pilot Run	Approximately 50 units for field testing and market validation
First Mass Production Run	Approximately 10,000 units (to be validated against pilot performance)
Target Unit Cost	To be validated through the Phase 1 Indicative Quotation
Target Timeline to First Pilot Units	Approximately 6 to 9 months from Phase 1 completion (indicative)
Target Markets	United Kingdom and European recreational marine, with potential extension to commercial marine use subject to certification
Funding Status	Self-funded

Note on production samples versus pilot manufacture. The original enquiry referenced the supply of fifty units for testing. A fifty-unit run sourced directly from a manufacturer without prior engineering work would not produce a reliable test of the product, because the geometry, materials, welding parameters, and CO2 system have not yet been engineered to a production-intent specification. Phase 1 is the engineering work that has to precede a pilot run, so that the fifty units delivered for testing are built against a defined and qualified specification rather than against the current hand-built prototype. The pilot run sits inside the Development Roadmap as a defined work package downstream of Phase 1.

04 — Phase 1, Engineering Validation

Six Phase 1 Deliverables

Phase 1, Engineering Validation is the first paid engagement in the Eyeson Life development programme. The work is engineering-led: a design capture and engineering drawing exercise that produces the first set of production-intent engineering files from the physical prototype and the patent specification, a focused engineering workstream on the inflatable architecture and CO2 charge specification including early failure-mode review, a DFM, DFA, and DFX engineering assessment, supplier engineering engagement with indicative pricing, and a Development Roadmap that consolidates the output into a costed phase-by-phase pathway to qualified mass production manufacture.

Duration: approximately 4–6 working weeks from confirmation.

Phase 1 consists of the following six deliverables.

Engineering Kickoff Workshop

A working technical session with the Shield Works R&D team, not an introductory call. The team walks through the patent specification, the physical prototype on receipt at Shield Works, David's commercial and channel goals, and the inflatable architecture in detail, and agrees the engineering priorities and workstreams before work begins.

Design Capture and Engineering Drawing Package

Because no CAD or formal engineering drawings exist for the Eyeson Life device, this deliverable is a design capture exercise rather than a CAD audit. The Shield Works R&D team produces the first set of production-intent engineering drawings, a preliminary 3D CAD representation, and a structured bill of materials, all reverse-engineered from the physical prototype on receipt at Shield Works and cross-referenced against the patent specification. This is the foundation on which the rest of Phase 1 and the downstream development work is built. Accuracy of the engineering capture is subject to the integrity of the physical prototype on receipt; if the prototype reveals material inconsistencies versus the patent specification, those will be flagged and resolved jointly before the engineering output is finalised.

Inflatable Architecture, CO2 Charge Specification, and Early Failure-Mode Review

Dedicated engineering workstream on the central technical question. Covers inflation pressure curve and structural stability of the inflated spheroid, CO2 cylinder sizing against total internal volume, valve and pressure-control architecture, tube diameter and material selection, node weld geometry and parameters, packed pouch envelope target against waist-belt wearability, manual pull-cord and immersion-sensor activation mechanism specification, and integration of the SOS LED and visibility aids. The deliverable also includes an early failure-mode review covering weld leakage, over-pressure protection, partial deflation behaviour, immersion sensor reliability, manual activation force and pull length, packed pouch deployment dynamics, user attachment security, in-water visibility performance, and the service or re-arming process after activation. Output: a documented engineering position with trade-off analysis, a recommended technical specification for Phase 2 confirmation, and a preliminary failure-mode register with mitigation direction.

Preliminary DFM, DFA, and DFX Engineering Assessment

Written assessment covering DFM and DFA across the soft goods inflatable structure, the CO2 system assembly, the waist belt and pouch sub-assembly, and the auxiliary electronics. Includes tooling direction (RF welding tooling, pouch and harness construction, any minor injection-moulded components), packaging strategy, assembly sequence, preliminary certification pathway mapping (referencing the ISO 12402 family for personal flotation aid context and noting where the Eyeson Life device sits outside the standard category), and a structured risk register with mitigations. The certification pathway is preliminary at this stage; the definitive route requires specialist testing and certification partner input and is confirmed during Phase 2 development.

Supplier Engineering Shortlist and Indicative Quotation

Qualified supplier shortlist drawn from the Shield Works supply chain and wider network, with first-round engineering engagement to confirm capability and capacity on RF welding of polyurethane-coated polyamide fabric (a process already qualified in the Shield Works network on other client programmes), CO2 cylinder and valve supply, the waist belt and pouch construction, and the auxiliary electronics package. Indicative unit pricing at multiple volume tiers, benchmarked against the shortlisted suppliers. Accuracy is subject to the defined level of readiness for manufacture; final unit costs are locked against specific supplier quotes as the Phase 2 development progresses.

Development Roadmap (Full RTMP)

The 25 to 35 page consolidating document that carries the Phase 1 engineering output forward into Phase 2 and through to qualified mass production manufacture. This is the full Route to Market Plan for the Eyeson Life device.

The Development Roadmap will include:

Phase timelines and phase management costs across the full development programme.
Shield Works resource allocations and core deliverables across sampling, development, design optimisation (full DFM, DFA, DFX), prototyping, pilot run manufacture, mass production, and scaled production.
Consolidated written output of the Phase 1 engineering work, including the design capture output, the inflatable architecture and CO2 charge specification, the failure-mode register, and the DFX assessment.
Component-level bill of materials with material specifications and qualified supplier direction.
Soft goods construction and RF welding plan with weld parameters, fixture requirements, and supplier engineering input.
CO2 inflation system specification including cylinder, valve, pressure-control architecture, and activation mechanism integration.
Auxiliary electronics integration plan covering immersion sensor, SOS LED, and light-sensor control.
Certification pathway map with specialist testing and certification partner identification, scope, and indicative fee direction.
Prototyping and iteration plan with validation gates including in-water testing.
Tooling strategy and indicative tooling investment direction.
Pilot run manufacture plan (target fifty units) with QC gating criteria and field testing protocol.
Mass production pathway with scaled production goals towards the ten thousand unit target.
Packaging direction and indicative packaging cost.
Risk register with mitigations and owner assignments.

Note: Phase 1 is the first phase of the Eyeson Life development programme. Phase 2 and subsequent development, tooling, certification, and production work is scoped and costed within the Development Roadmap for David's approval before any execution begins.

Phase 1 Fee — Engineering Validation

$6,000 USD

Payable in full on project confirmation

05 — Exclusions

What Sits Outside Phase 1

The Phase 1 fee covers all six deliverables in Section 4, including engineering work, design capture, the inflatable architecture and failure-mode workstream, DFX assessment, supplier engagement, indicative quotation, and the Development Roadmap. The following are excluded and would be scoped and costed within the Development Roadmap itself or addressed through specialist external partners coordinated by Shield Works as prime contractor.

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Physical prototyping, sampling, and field testing of the device. Prototype iteration and in-water validation are scoped inside the Development Roadmap.

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Tooling and any production fixture costs (RF welding fixtures, pouch construction tooling, any injection-moulded component tooling).

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Specialist marine safety testing and certification fees. Certification testing under the ISO 12402 family, SOLAS and MED requirements, or any other applicable standard is routed through a specialist external testing and certification partner identified in Phase 1, with fees quoted and paid directly to the partner.

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Patent prosecution, filing fees, or any further intellectual property work beyond the existing European application. Patent guidance is included; legal and filing fees are separate.

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Shipping costs for the physical prototype from the United Kingdom to Shield Works, and any subsequent sample shipping between China, the United Kingdom, and other locations.

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Production unit costs.

Note on the post-Phase 1 model

once a supplier set is confirmed and production begins, C2W and Shield Works operate as Eyeson Life's manufacturing partner. You receive a single unit cost per device that covers goods, RF-welded soft goods construction, CO2 system integration, auxiliary electronics, waist belt and pouch assembly, quality control, supplier management, packaging, and logistics coordination. These are not billed as separate service fees. The Phase 1 Supplier Engineering Shortlist and Indicative Quotation is specifically designed to establish those unit costs with confidence before any production commitment is made.

06 — Payment Terms

Phase 1 Payment

Stage	Fee	Payment Trigger
Phase 1, Engineering Validation	$6,000 USD	Payable in full on project confirmation

07 — Safeguards & Clarifications

How We Keep Phase 1 Honest

Provisional status and pre-engagement call

This proposal is provisional pending a pre-engagement call between Mark Jacobs, CEO of C2W Group and Shield Works, and David West. The scope and fee are firm. The purpose of the call is to align on commercial intent and route to market before Phase 1 begins, so the Phase 1 output is built on the right starting assumptions.

Receipt of the physical prototype

Phase 1 engineering work commences on receipt of the physical prototype at Shield Works. The design capture deliverable depends on the prototype being available for direct measurement, materials inspection, and weld review. Shipping arrangements and customs documentation will be coordinated by the C2W team in support of David. Shipping cost is paid by Eyeson Life directly.

Certification pathway is preliminary in Phase 1

The certification pathway mapping delivered in Section 4 is directional, not definitive. The Eyeson Life device sits adjacent to the established life jacket and personal flotation aid categories but is not itself a buoyancy aid. A definitive certification route requires specialist testing and certification partner input and is confirmed during Phase 2 development, with the testing partner formally engaged at that point. Certification testing fees are excluded from the Phase 1 fee.

Scope changes

If requirements change materially during Phase 1 (for example, a change in target markets, an addition of commercial marine certification scope, or a material change in the device architecture identified on prototype receipt), we will adjust cost and timeline accordingly and agree any changes with you before proceeding.

Quotation accuracy

The Indicative Quotation delivered as part of Phase 1 is subject to the level of readiness for manufacture. Final pricing is locked against specific supplier quotes inside the Phase 1 output and progressively refined through Phase 2 development.

Design capture accuracy

The engineering drawing package produced in Phase 1 is reverse-engineered from the physical prototype on receipt at Shield Works and the patent specification. Where the prototype and the patent specification diverge, the divergences will be flagged for your decision before the engineering output is finalised.

Intellectual property

Eyeson Life Ltd retains all intellectual property in the marine safety device, including the European patent application, the device design, the bill of materials, and any derivative work produced under this engagement. Shield Works operates within an IP-secure, ISO-certified facility and operates under the NDA already in place between the parties. An NNN agreement covering all third-party suppliers engaged on the project will be put in place before any external supplier engagement begins.

Timelines

The 4 to 6 working week Phase 1 estimate assumes reasonable availability for the Engineering Kickoff Workshop and follow-up technical discussions during the engagement, and prompt shipping of the physical prototype from the United Kingdom to Shield Works.

08 — Why C2W & Shield Works

A Single Accountable Manufacturing & Engineering Partner

Full-time dedicated project manager in our China HQ coordinating all suppliers, engineering resources, and the Eyeson Life team, with full visibility on who is making what and where.

In-house R&D, mechanical engineering, DFM and DFX, quality control, and audit resources, led by a mechanical engineer CEO (28 years including 8 years at Airbus) and a Head of R&D with over 12 years of China-based product engineering experience.

RF welding of polyurethane-coated polyamide and similar coated fabrics is an established capability in our qualified supply chain network, currently active on other client programmes. The Eyeson Life device does not require us to qualify a new process from cold.

IP-secure, ISO-certified manufacturing facility (Shield Works, Zhuhai) available for sub-assembly integration, quality control, packaging, and warehousing. Relevant to a product covered by a live patent application.

Established supply chain across soft goods construction, RF welding, CO2 cylinder and valve supply, small electronics, and waist belt and harness construction, with a single commercial counterparty for the all-in supply.

Prime contractor model. Where specialist external expertise is required (marine testing and certification partners in particular), Shield Works identifies, qualifies, contracts, and manages those partners on the programme. You deal with us; we manage them.

Transparent factory selection and direct supplier relationships. No hidden middlemen, no opaque quotes, no surprises on quality.

End-to-end capability from concept through to qualified mass production, with packaging and 3PL services available through the same group of companies.

09 — Next Steps

From Pre-Engagement Call to Phase 1 Delivery

Mark Jacobs holds a pre-engagement call with David West to align on commercial intent and route to market before Phase 1 begins. No cost, approximately 30 to 45 minutes.

On alignment from that call, David confirms acceptance of this proposal and the Phase 1 fee.

C2W issues invoice for $6,000 USD.

On receipt of payment, the C2W team coordinates with David on the shipping of the physical prototype from the United Kingdom to Shield Works.

On receipt of the physical prototype at Shield Works, the Engineering Kickoff Workshop is scheduled with the Shield Works R&D team.

Phase 1 output, including the Development Roadmap, delivered within approximately 4 to 6 working weeks of the Engineering Kickoff Workshop, including the full development programme roadmap with costs and timelines for your approval.

This proposal is non-binding at this stage and is intended to give you clarity on cost, structure, and what Phase 1 will actually produce. If you are happy with the direction, we can move to the pre-engagement call at your convenience and proceed from there.

Best regards,

Mark Jacobs

CEO, C2W Group / Shield Works

May 2026