Amp up your endurance strength, efficiency and pulling power with a drag suit. These special suits are made to fit over your normal brief or jammer, giving you extra drag and resistance as you move through the water. Why would a swimmer want extra resistance? The extra drag can help your muscle endurance and improve your pulling power. When you're not wearing the suit, the pulling power transfers over, giving you a more powerful stroke and faster rotation. Some swimmers wear their drag suit warming up before a meet, to get the feeling of drag before taking it off and feeling the extra boost of power during a race.