This is a fantastic set of Aeris Velocity Full Foot Fin for Scuba Diving, Snorkeling and Swimming CLOSEOUT Features of these wonderful fins include: Scuba Lab Testers Choice! Aeris quality Power Enhancing Vents (PEV&';s) for reduced leg stress and increased velocity Comfortable fit with either socks or barefoot Lightweight only 2.5 pounds per pair, the Velocity Full Foot fins are the ideal SCUBA or snorkeling fin for the traveler Advanced composite materials for ideal flex and memory Ergonomically designed foot pocket Model #50.21 These Full Foot Pocket Swim Fins are a great set of fins. Afford to dive.