Nike Swim Boy's 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. INTERIOR DRAWCORD for comfort and adjustability;LINED for better fit and security;FLAT SEAMS for reduced chafing;Nike HydraStrong fabric provides long-lasting durability, swim after swim;Embroidered Swoosh