TL;DR: A sports bra manufacturer should release more than one standing fit sample. A controlled cut-and-sew program links six motion points: underband, straps, front and soft-cup structure, neckline and armhole, back, and movement-plus-care evidence. A&J International Apparel has produced cut-and-sew womenswear in Dongguan, China since 2006 with a 50-piece minimum per style. This guide provides…