a curved, fin-like shape webbed toes a rubber or neoprene covering an adjustable strap or buckle a foot pocket for the foot to fit into a textured sole to help grip the surface
flipper which is a curved, fin-like shape flipper which has webbed toes flipper which is a rubber or neoprene covering flipper which is an adjustable strap or buckle flipper which is a foot pocket for the foot to fit into flipper which is a textured sole to help grip the surface