Go beyond basic with the Hydro Moc Drift Clog from Merrell featuring proprietary FloatPro Foam with 10% BLOOM algae for all day. Lightweight comfort that is more eco-friendly.The Hydro Moc Drift Clog by Merrell is an amphibious model in the aftersport category, designed for the trails that take you in and out of water. Formed from a single-density injected EVA contoured arch with an articulated heel and strap for advanced support. Itâ€s not for everyone, but it might just be for you.