Perfect for protecting the little ones from harmful UV damage as well as preventing painful wetsuit rashing. Wear it on the beach or under a wetsuit with absolute comfort thanks to its super stretchy design. :: Boy > Rash Vests. Long sleeves: Adding more warmth and protectionStretch fabric: Designed to be tight to the skin. the stretch of the fabric will offer a perfect customised fitTurtle neck: Help to protect the neck from wetsuit rashing and harmful UV from the sunFlatlock stitching: Extremely flexible. the flatlock stitching is also super breathable perfect for sunny days on the beaMaterial: 92% Polyester 8% elastaneSun protection: UPF50+ Sun ProtectionMen's rash vest Size: 07-8 YRS,09-10 YRS,11-12 YRS,13-14 YRS,03-4 YRS,05-6 YRS.