Drawstring closure *Alert: True to size : Please follow the size examples below *(EX: Size "Large recommended" - Size for 6" 215 lbs.) (EX: Size "Medium" 5'9"165 lbs.) [Materials] Mixed of nylon & spandex fabric has a soft hand feel, quick-drying, and 4-way stretch for unrestrictive performance. [Chlorine Resistant] While swimming in a pool, our jammer will be more durable, retained its colors and shape. [Interior Drawstring & Dual Lined Crotch] It is for an improved secure fit and enhanced mobility. [Flat-Lock Seams] It is for excellent comfort and reducing skin friction. TSLA's Swim Jammers TSLA's surf and water sports Swim Jammer lineup Twisted design pattern that adapts to Swimmer's movements Design 3-D patterns that adjusts according to the motion trajectory that optimizes swimming and diving 4-Way stretch for elasticity and dual lined for non-see through coverage Pristine detail design and flat-lock stitching Interior Draw Chlorine Resistant Functional Fabric High-density fabric that protects your skin from outsize hazards and harmful UV rays Enhanced elasticity and resilience for flexible movements Quick dry and water wicking for maintaining the best of conditions inside and outside of the water