MIT’s melt-respin stretch yarn: a watch item for swimwear sourcing teams

MIT engineers report a polyethylene stretch yarn that melts and respins without separating fibers. It targets the spandex-blend problem swimwear depends on, but without swimwear data or fabric trials it is a technology to watch, not a spec.
The LYCRA Company’s renewable fiber and spandex recycling: what swimwear sourcing teams should take from Textile Exchange 2026

The LYCRA Company will showcase 70% plant-based Renewable LYCRA® fiber and pilot-stage spandex recycling at Textile Exchange 2026. What swimwear brands can and cannot plan around today.
Decide who supplies the fabric before your swimwear order is quoted

Fabric can reach the factory two ways: bought by the factory or supplied by you. The choice decides who tests the lot, who carries shade and shrinkage risk, and who owns the claim when bulk behaves differently from the sample.
Chlorine, sunscreen, and sunlight expose what a sample color approval misses

Sample color under office light tells you little about how a dye survives chlorine, sunscreen, and UV. This guide covers the failures that show up after bulk ships, the tests that predict them, and the points to write into the tech pack.
What a kids’ swimwear spec needs that an adult style does not

Adult styles do not scale down cleanly. This guide covers the sizing, fabric, trim, safety, and sampling decisions that change when a brand adds a kids’ swimwear line.
Why light swimwear turns see-through and what the lining spec controls

Light swimwear fails at opacity, not at the photo shoot. This guide explains what determines show-through, how lining choice changes the result, and which spec fields to lock before sampling closes.
What changes fabric consumption on a swimsuit order

Fabric consumption is an estimate built on fabric width, marker efficiency, print repeat and shrinkage. Here is what to verify before a swimwear quote becomes an order.
Taiwanese Recycled Polyester Elastomer: A Material Signal for Swimwear Sourcing Teams

FENC Topgreen rTPEE turns contaminated footwear waste into recycled polyester for elastic fibers and breathable membranes. Here is what swimwear sourcing teams should verify before treating it as a viable material.
Swimwear Size Grading: What to Check Before Bulk Production

A practical review process for checking grade rules, size-set samples, measurement points, and fit changes before a swimwear style moves into bulk production.

