This is the Aqua Lung Wind Fins Full Foot Pocket Scuba Diving Snorkeling FinFeatures: Travel-size blade and light weight make the fin ideal for any adventure Blade made of two materials of light polypropylene with rubber inserts, offering comfort and durability Comfortable and ergonomic foot pocket designed to accommodate the anatomy of the foot Grip Effect inside the foot pocket to ensure foot stability Tab on the heel for easy don & doff Rigid sole guarantees an optimal protection of the foot and a good power transmission to the blade Anti-slip rubber pads Structured side ribs ensure progressive and controlled bending Yellow color option made with Hi-Vis Technology for great underwater sighting The Wind is a new entry-level full pocket fin, ideal for light scuba and snorkeling. Even though it is compact and lightweight, the Wind is still robust and comfortable. "