The Nike Swim Women's Poly Solid Cut-Out One Piece is an athletic swimsuit designed to provide a maximum range of motion. It provides medium bust support and features an exposed back and minimal bottom coverage. A full lining provides a great fit while flat seams prevent chafing so its comfortable to wear for extended laps sessions in the pool. Made from Nike HydraStrong fabric, the swimsuit is made to last. Body: 53% polyester 47% PBT;Lining: 100% polyester;MEDIUM SUPPORT -Regular straps work for a wide, middle range of sizes and activity.;MINIMAL BOTTOM COVERAGE -An exposed back and minimal bottom cut for comfort, range of motion and great style.;FULLY LINED for better fit and support;FLAT SEAMS for reduced chafing;Nike HydraStrong fabric provides long-lasting durability, swim after swim;Heat transfer Swoosh