Sun Smarties Long Sleeve Rashguard and Matching Board Shorts, Boys 82% Nylon/18% Spandex Imported Give your little boy "extreme" sun protection with these long sleeve UV rash guards and matching swim trunks, covering him from neck to knees with UPF 50+ protection, the highest level of sun protection available Premium grade, high-tech nylon/elastane blended fabric is so sleek and stretchy that little boys will happily keep them on; this chemical-free, non-chafing, quick-drying fabric was specially designed for sensitive skin, keeping him cool in the sun and warm in the water Rash guard features extra protection with angled cuffs and longer back; and extra longevity with double-stitched seams and superior chlorine and saltwater resistance Board Shorts feature: fully elasticized waistband and front tie for a perfect fit and easy on and off; full mesh lining; guaranteed to last all season and maintain its shape The perfect combination of practicality, safety, and comfort - once again they have earned the name of One Step Ahead; don't settle for second best