It is a great tool meant to develop stability, strength, speed and stamina. It consists of two strips of rubber that you can attach above your knees, one in the front and one in the back. You have to override the resistance of the rubber by using all the power of your legs and of the hip area.
2 yellow rubber bands with latches (1 short, 1 long)
2 black rubber-coloured bands with latches (1 short, 1 long)
2 elastic strips with Velcro fasteners
1 storage bag