Mares Concorde Full Foot (FF) Freediving Fin is the ideal choice for shallow to mid-depth diving. The fins new techno-polymer blade and high-performance parabolic flexion with over molded foot pocket make this fin lightweight, flexible, with extreme comfort for hours of freediving or hunting excursions. The fins tapered lateral rips for progressive blade flex and the new tip profile prevents slipping from side to side while kicking. The open toe rubber foot pocket design allows for a greater range of fit and comfort. The foot pocket comes equipped with a finger pull tab for easier donning and doffing. If you free dive the Mares Concorde Full Foot non-vented blade fin is the perfect choice. The fins blade measures from 33.8" to 36" (860 mm to 916 mm) and the fins weigh from 32 oz. to 35 oz. (9042 g to 1027 g) depending on the size. The Mares Concorde Full Foot Fins are available in multiple sizes and colors.