The Hydro Fin Black Charcoal Medium Swim Fins are purpose-built bodysurfing and bodyboarding fins designed for powerful, efficient wave-catching — a compact blade that provides the thrust you need to drop into waves without the bulk of traditional dive fins. Key Features: Medium Blade Length — shorter than dive fins for faster kick tempo, quicker direction changes, and better maneuverability in the surf zone; long enough to generate real propulsion for wave-catching and positioning Efficient Propulsion — blade shape tuned for surf-specific use — generates strong thrust on the downkick for catching waves and paddling through whitewater Black Charcoal Colorway — UV-stable pigment in a neutral colorway that holds up to saltwater and sun across seasons of use Anatomical Foot Pocket — ergonomic pocket shape fits the natural contour of the foot; accommodates a thin water sock or neoprene bootie in cooler conditions Durable Rubber/Polymer Construction — built to handle impact zone turbulence, rocky reef entries, and the general abuse of regular ocean use Medium is the most commonly used size for bodysurfing — it fits a wide range of foot sizes and balances propulsion power with the foot speed you need to catch waves. Whether you're bodysurfing the shorebreak, bodydipping under sets, or training for bigger waves, a good pair of swim fins is one of the most important tools in your quiver. The Hydro Fin Medium gives you that power without weighing down your feet between waves. Sizing & Fit: Medium fits US shoe sizes approximately Men's 7–10 / Women's 8–11. Fins should fit snugly without heel slippage but not so tight that they restrict circulation. When in doubt, size up for comfort during longer sessions. Care: Rinse thoroughly with fresh water after every session. Store away from direct sunlight to prevent rubber degradation.
