The Sprint Water Polo Cap provides protection and decreases drag during water polo. Cap Includes ear guard and adjustable chinstrap. The set is Numbered 2-13, consisting of 12 caps. In order to have a complete set, you would need 2 goalie caps. Caps are constructed with PVC coated nylon and double sewn seams. Our caps are sold by the USA Water Polo Association. Meets all school, college, university and NCAA regulations.