Arena racing jammers for men - Carbon Core FX - Dark blue/light blueMaster the Water Here's a pair of awesome jammersperfect for those meets where you swim breaststroke, backstroke, or short and mid distance freestyle. They support your body in the water and feel super comfortable, so you can put all your energy into swimming your best. Arenas latest Carbon Core FX is built to give you a real sense of speed and control. These competition jammers are specially designed with intense compression to support the muscles