One Step Ahead Sun Smarties Baby Toddler Boys Long Sleeve Rash Guard and Swim Diaper Trunks 82% Nylon/18% Elastane Imported The perfect swimming outfit for your baby boy: a swim diaper that meets the health standards of all public pools, and rash guard that provides maximum UPF 50+ upper body protection from harmful UV rays The sleek and stretchy fabric is a premium-grade, high-tech nylon/elastane blend that is chemical-free, non-chafing, and quick drying, perfect for sensitive skin, keeping him cool in the sun and warm in the water Premium safety and design features of rash guard include: extra protection with longer back, angle-cut cuffs, and generous stand up collar; double-stitched seams for maximum durability; and superior chlorine and saltwater resistance Swim diaper component is designed to contain, not absorb, solid or liquid waste, using a single layer of polyester fabric that is coated to be water proof; this provides a thinner garment that is more comfortable for your childs swimming than most other swim diapers Will last all season and maintain its shape; practical, safe, comfortable, and stylish earning them their name of One Step Ahead; don't settle for second best