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 natural bio-technology activates to fight odors BioGrip slip-resistant outsole Bloom eco-friendly, algae-based EVA footbed that helps clean polluted water habitats. Flex Width insole system adapts to foot width Heel Lock prevents heel slip and ensures optimal fit Weight:3.51 lbs. Height:14" Temp Rating:58°F/-50°C Calf Circumference:18" These have only been worn a few times and come in the original box. Excellent Condition!!!