DoubleFlex Total Body Portable Gym

Say goodbye to your boring session in the gym and get your sweat on anytime and anywhere with the DoubleFlex Total Body Portable Gym. SpiraFlex technology, which was developed by NASA for astronauts on the International Space Station, has been proven to be just as effective free weights but offers the freedom of portability. Designed to be used for your arms or legs, the DoubleFlex system allows you to adjust the resistance in 5-pound increments up to a total of...