Men's Solid Jammer Swimsuit Boys Swimwear Shell: 80% Nylon + 20% spandex, Lining: 95% Polyester + 5% spandex Low Moisture absorption and quick drying; Hand wash cold water Reliability and long-lasting durability Elastic waist band for extra comfort and support Asia size is about 2 size smaller than US size and our item tag is printed in Asian size only. so order your Size on USA Size rather than the Asia Size