What should we prepare before starting a custom sports bra project?

Prepare the intended activity level, target support level, reference images, fabric direction, size range, cup or pad preference, strap and neckline direction, logo placement, and any existing tech pack or sample. If the project is mature, OEM review can be more efficient. If the support structure is still unclear, ODM discussion can help define the product role before sampling. Clear support goals reduce repeated revisions and improve development alignment.