Nike Swim Boy's Poly Solid Jammer has a form-fitting cut to reduce drag in the water when racing. Chlorine-resistant fabric gives it durability while an adjustable drawcord, inseam gusset, and ergonomic, flat-seam construction allow for comfort in motion. Internal deawcord 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.