Air permeability, moisture transfer and wind resistance interact with activity, base layers, insulation and ventilation; no single claim defines comfort.
Frame the decision
Describe activity and exposure first, then compare named material tests and confirm the garment's vents, openings and fit in a layer trial.
The approved jacket system should balance the buyer's measured priorities rather than maximize one property in isolation.
Build the controlled worksheet
Keep these five topic-specific inputs together so the quotation, sample and inspection teams do not work from different assumptions:
- Activity level: state the requirement, reference, status and approval owner.
- Wind exposure: state the requirement, reference, status and approval owner.
- Base and insulation layers: state the requirement, reference, status and approval owner.
- Fabric test methods: state the requirement, reference, status and approval owner.
- Ventilation features: state the requirement, reference, status and approval owner.
Evidence to request
- Approved source or drawing for activity level
- Order-specific record covering wind exposure
- Written acceptance basis for base and insulation layers
- Controlled decision history for fabric test methods
- Release evidence connected to ventilation features
Evidence must identify the relevant product, material, revision or lot. Record any limitation, substitution or item still awaiting approval.
Risks to close before approval
- Comparing values from different test methods
- Ignoring moisture generated by the wearer
- Specifying wind resistance without a ventilation plan
Assign an owner, due date and written disposition to each unresolved risk. Do not allow an informal answer to replace a controlled revision.
Use the result in the RFQ
Attach the worksheet, quantity, destination, required date and current sample status. Ask the supplier to list assumptions and exceptions against the same five inputs.