ORTHOPEDIC FOOT POCKET FOR COMFORT - Designed with a closed, orthopedic foot pocket made of thermoplastic rubber, the Mares Avanti Tre Diving Fins provide a secure, comfortable fit suitable for barefoot wear or with neoprene socks, making them ideal for warm-water diving and snorkeling CHANNEL THRUST TECHNOLOGY - Equipped with Mares' advanced Channel Thrust technology, these snorkel fins maximize water flow through three specialized channels, enhancing thrust with minimal effort for a powerful yet efficient underwater experience DURABLE CONSTRUCTION - Built from high-quality, long-lasting materials, the Avanti Tre fins are reinforced with varied thickness in the instep and heel areas, ensuring they stand up to rigorous use while retaining flexibility MEDIUM-SIZED TRAVEL-FRIENDLY BLADE - Featuring a medium blade length, these swim flippers strike the perfect balance between power and portability, making them compact enough for easy travel while still delivering excellent performance underwater STABILIZING TRIM TABS - Integrated stabilizing trim tabs on the Mares fins enhance underwater control by reducing drag and boosting maneuverability, making them ideal for precise movement through coral reefs or open water adventures