Nike Swim Boys´ Poly Solid Square Leg is a racing swimsuit with a short, square-cut leg. It offers a little more coverage without restricting leg movement. Chlorine-resistant fabric gives it durability while an adjustable drawcord and ergonomic, flat-seam construction give him comfort in motion.Specifications:- 100% polyester (53% polyester/47% PBT) warp knit (chlorine resistant)- 100% polyester (lining)