Go beyond basic with the new Hydro Moc featuring proprietary FloatPro Foam with 10% BLOOM algae for all day, lightweight comfort that is more eco-friendly. Water-friendly EVA foam upper for a lightweight flexible fit and ease of cleaning. External translucent rubber rear sling with 10% recycled rubber fleck locks in the heel. 100% recycled nylon rivets. BLOOM performance foam is made of 10% algae biomass, transforming green water into clean water in the process. Vegan-Friendly. 0lbs-15oz, 420g. The Hydro Moc is designed to be an easy on / easy off shoe, so sizing is generous.