This is a pre-owned black Nike sports bra, size M, featuring a front zipper closure with an additional hook-and-eye clasp at the bottom for secure fastening. The bra has adjustable straps that cross in the back, and the interior shows a mesh lining for breathability. The Nike swoosh logo is visible on the back band. The fabric appears to be a performance material, possibly Nike Dri-FIT, as indicated by a subtle print on the interior. No significant imperfections are visible.