Water-friendly EVA foam upper for a lightweight, flexible fit and easy cleaning. 100% recycled webbing. BLOOM performance foam made of 10% algae biomass. FloatPro Foam midsole for lightweight comfort. Merrell Quantum Grip with 50% recycled Austin Rubber outsole. Bungee lace with toggle closure for a secure fit. With the all-terrain Hydro Moc, Merrell takes its polarizing silhouette out of the water and into varied environments. The AT Cage features the same design system as all other Hydro Moc models, highlighted by a resilient and water-friendly EVA foam cage upper. This version is created with 80% recycled nylon on the upper, a BLOOM performance foam midsole made from 10% algae biomass, a toggle lace closure for easy access, and an external rear sling that locks in the heel.