Stretch your limits through water resistance. Used by the United States Olympic Swim Team and Olympian, collegiate and high schools swimmers worldwide. StrechCordz® resistance bands for swim training improve stamina, power, stroke, endurance and Individual Medley times for international Olympians and novice swimmers. Both In-water and dryland equipment are used for full swimmer pull, tricep extensions, rowing, overhead raises, chest flys, proper hip rotation, stroke efficiency and more.