80% Nylon/20% Spandex. Imported. Sun protective boys’s rash guard with full-length short sleeves and matching swim board shorts for toddlers, little kids, and big boys up to 12 years Swim shirt with high collar for optimal sun protection, color blocking, and colorful appliqu??, SunBusters logo at front Swim trunks with elastic waist, color blocked, mid-thigh length, unlined, SunBusters logo. SHORTS INSEAM (inches): 2/3 yr – 4.5 | 4/5 yr – 4.75 | 6/7 yr – 5 | 8/10 yr – 5.25 | 11/12 yr – 5.75 UV SAFE SWIMSUITS: Our children’s 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. Our swim essentials ensure that covered areas don’t need sunscreen. QUALITY + COMFORT: Flat lock stitching for extra durability and to reduce chafing, 4-way stretch and quick drying fabrics for ultimate comfort at the beach, pool, and pretty much anywhere.