Designed for added warmth, the Boys' Solid Thermal Suit is perfect for enjoying the ultimate water adventure. Neoprene fabric ensures UPF 50 protection from the sun, as well as peace of mind for TYR parents, while the kid friendly, tugless fit allows for extended comfort. With bright color blocking detail and front zip grip, your young swimmer is sure to feel like a rockstar in the KBTSN2Y. 80% Neoprene / 15% Nylon / 5% Spandex 1.5mm Neoprene