FUNCTIONAL FABRIC: 82% Polyester, 18% Spandex,high quality assured rash gurad swimsuits for boys. DURABLE AND FLEXABLE: Highly chlorine and salt resistant fabric,low water retention and extremely quick drying.Four-way stretch and shape memory. STYLISH SWIMSUITS FOR BOYS: Long Sleeve bathing suit rashgurad swimwear with Long Sleeves,designed with high collar for optimal sun protection. EXCELLENT SUN PROTECTION: Boys Sun protective swimsuit fabrics are rated UPF 50+ and provide maximum UV sun protection by blocking 98% of UVA + UVB sun rays, wet or dry; similar rating as SPF for sunscreens. Great for the Beach, Lake or Pool and excellent for learning to swim or for extended periods in and around the water. GREAT VALUE PACK: Package included two piece boys rash guard swim suit