Train smart and swim hard with the TYR Big Swimples Goggles. Whether you're training for a triathlon or just swimming for fun, these goggles are swimply the best!. . . . Small, unibody frame accommodates various facial types. Durable, hypoallergenic silicone gaskets provide a comfortable, watertight seal and maintain their shape over time. Optical grade polycarbonate lenses provide both anti fog and UV protection. Secure release button allows for quick and easy strap adjustment. Ideal for both training and recreational swimming.