Fishtail jersey made of easy-care elastic material, machine washable, with high resistance to fading, salt, and chlorine. The open end allows for water drainage and quick drying. It is easy to put on and take off. The monofin cover is made of neoprene from the diving sport. The patented monofin is worn like a stocking, and soft cuffs prevent pressure points, eliminating the need for straps.