SwimZip 4T Boys Swim Set - amazing quality and sun protection for your little! Made of the highest-rated, most comfortable UPF 50+ sun protective fabric Blocks 98% of the sun’s harmful UVA & UVB rays for maximum sun protection 4-way stretch for extra freedom of movement Quick-drying and chlorine-resistant fabric Flat seams help to reduce rubbing Rash Guard: Nylon/Spandex Swim Trunk: Polyester Features✨ Full-length zipper for easy-on and easy-off Neck collar for extra sun protection Zipper garage for no-chaffing on the chin Zipper guard behind zipper protects skin from a hot zipper and from rubbing Tagless neck for anti-inch comfort Big zipper pull makes it super easy for your little one to zip up themselves Elastic waistband and adjustable tie waist drawstring closure for flexible sizing Trunks- Two side pockets and one back pocket Eyelets at the center back waist and back pocket to avoid air buildup when cannonballing Soft jersey liner for extra security and comfort