Baleaf Men's PBT Durable Solid Square Leg Training Racing Swimsuit 52% Polyester / 48% PBT Chlorine-resistant fabric offers the longest lasting swimwear and will not stretch after countless workouts Low moisture absorption, lightweight and quick dry resists sagging, fading and snagging Durable material for reduction in drag provides better performance for your racing or training and ideal for the frequent swimming Inner drawstring waist for a snug, adjustable fit Hand wash in cold water