Brands should define support level by activity use, body coverage, fabric behavior, underband control, strap structure, and expected movement intensity. A yoga bra, studio bra, training bra, and running bra should not follow the same development logic. Low-support bras need comfort and flexibility. Medium-support bras need balanced hold. High-support bras need stronger structure, more stable recovery, and better coverage. Defining support level early helps reduce unclear sample revisions.