SunBusters Boys Swim Shorts 12 mos - 12 yrs, UPF 50+ Sun Protection 80% Nylon/20% Spandex Imported Sun protective bathing suit swim trunks with elastic waist for infants, toddlers and boys up to 12 years EXCELLENT SUN PROTECTION: Swimwear 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. Covered areas don't need sunscreen. Swim bottoms are unlined for a rash-free swim plus good coverage over swim diapers for the little ones Made from 80% Nylon/ 20% Spandex, color blocked, mid-thigh length cut, SunBusters logo Swimsuit with flat lock stitching for superior quality with soft, quick drying and 4 way stretch fabrics