Merrell Mens's Hydro Moc Sandal - Black Using advanced construction techniques, this easy on / easy off shoe is more durable than others of its kind--for days spent in and around water. The Hydro Moc is designed to be an easy on / easy off shoe, so sizing is generous. If you normally wear a half size in Merrell footwear, we suggest you size down in this product, rather than ordering the ½ size larger. Features: Single-density injected EVA Contoured arch for support Articulated heel with strap for secure fit 2mm lug depth Weight: 0lbs11oz / 310g Water-friendly EVA foam upper for a lightweight flexible fit and ease of cleaning External translucent rubber rear sling with10% recycled rubber fleck locks in the heel BLOOM® performance foam is made of algae biomass, transforming green water into clean water in the proces BLOOM® performance foam is made of 10% algae biomass, transforming green water into clean water in the process. SHOE HYDO MOC BLKSKU: J48595