Cressi Clio Full Foot Fin, Frameless Mask, Dry Snorkel Set with Carry Bag Colorful and Functional Fin - Staple of Cressi Snorkeling Line Soft Elastomer Foot Pocket - Reinforced Non-Vented Blade Provide Maximum Efficiency and Comfort for Snorkeling Fluid and Undemanding Kick, Perfect for Children and Adults Blade Above Foot Pocket for Greater Surface Area Provides Efficient Kick