Speedo Proton Thinswim suit has been designed for young beginner athletes who need greater flexibility, floating, freedom of movement, and lightness so they learn to swim with comfort.This triathlon suit for children and young people is made with Yamamoto 38 foam that is lighter, floating, and elastic, which make it ideal for initiation. Besides, it includes a polyurethane fabric that improves durability, flexibility, and provides extra thermal insulation. Thick neoprene panels also reinforce freedom of movement and provide floating. This swimming suit for youth comes with a double neck to avoid the entry of water so it will feel lighter.These suits are ultralight, either in long sleeve or sleeveless version, improve the freedom of movement of the swimmer´s arms and shoulders.Unisex Youth design is now available in Thinswim design.Y38 (Yamamoto cell neoprene rubber) - Our ideal material for initiation to Triathlon.It combines great durability with excellent flexibility and buoyancy.Double neck - Double SCS collar flap to increase comfort and prevent water ingress.Polyurethane fabric to improve in lightness, flexibility and warmth.Thicker neoprene panels:provide thermal insulation and buoyancy.