SunBusters Boys Short Sleeve Rash Guard 12 mos - 12 yrs, UPF 50+ Sun Protection 80% Nylon/20% Spandex Imported Sun protective swimsuit shirt with full-length short sleeves 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. Bathing suit top with high collar for optimal sun protection, color blocked Cool design at chest and SunBusters logo at front Flat lock stitching for superior quality with soft, quick drying and 4 way stretch fabrics