30% lighter for higher jumps…100% waterproof for bigger splashes. Features: -100% Waterproof -Rebound cushioning provides all-day comfort and energy return -Made with seamless construction - 30% lighter and more durable -Constructed with 5mm Neo-Tech waterproof insulation -DuraFresh bio-technology activates to fight unwanted odors -BioGrip slip-resistant outsole -Removable EVA footbed -Heel Lock prevents heel slip to ensure optimum fit -Reflective Temperature Rating mark on heel -Temperature Rating:-35°F/-37°C -Calf Circumference: 12"