Mares Fins Razor Pro Flipper - Black/Black, Size 45 045BK

New fin with interchangeable blade.-Mares is the only company in the world that has a computerized test bench for design and testing of fins.-The characteristics of the foot pocket incorporate comfort, technique, and efficiency.-The volume and additional thickness on the instep or the tensioners under the arch have been meticulously studied to convey maximum thrust from the product without sacrificing ideal comfort.-The foot pocket is manufactured in a single material - one of the lightest - thus eliminating any problems in bonds between different materials and offering excellent mechanical properties..The significant side ribs perfectly support the blade, channelling the flow of water. They also prevent lateral slippage.-The variable-thickness blade bends during the various phases of finning action, achieving the ideal flexion curve.-The best technopolymers are used in this fin and increase its agility and resistance.-The special design of the channels makes it possible to increase an