OEM Footwear Materials: Approve the BOM

What does a footwear BOM control?

The bill of materials identifies the components needed to make the approved style. It links upper, lining, reinforcements, sole, trims and packaging to defined references. A material name without a specification may hide differences in thickness, finish or performance. Review the BOM with the sample so the purchased inputs match the intended product rather than a visually similar substitute.

Approve swatches and component references

Attach the supplier reference, colour, agreed properties and approval record to each important component. Keep physical swatches where practical and label them with the style and revision. Record who accepted them and whether acceptance was visual, technical or both. Approval of a colour does not automatically confirm every chemical or physical property; identify the evidence still needed for the market requirements.

Treat substitutions as decisions

If a specified input is unavailable, ask for a substitution proposal explaining differences, cost and delivery impact. Review whether the change requires fit or performance checks and update the sample reference if needed. Do not authorize silent substitutions based only on price. Keep the approved replacement linked to the revised BOM, with an effective order or production batch identified.

Confirm procurement readiness

Before bulk purchasing, check the final quantities, component lead times, approval status and responsibility for excess or obsolete materials. Material purchasing and product approval are different decisions. Agree which inputs can be ordered before final sample approval and who bears the risk if the design changes. Send unresolved technical questions back to development rather than allowing the purchasing date to decide the specification.