Handy Gym
Developed by NASA for use by Space Station astronauts, isoinertial technology can give you a powerful workout without any actual weights. The Handy Gym uses it to provide a whole-body workout in a compact package. Its conical pulley resistance system exercises muscles in both phases of movement, both concentric and eccentric, and works with a large variety of accessories to let you perform up to 200 different exercises all in a package that weighs just two pounds and fits easily into an overnight bag or backpack. Interchangeable inertial discs let it adapt to your abilities, and can be used with the double power pulley to offer up to 220 lbs. of resistance.
