The Dynarex Exercise Peddler is constructed of a durable steel, offering stability without wobbling or shaking during use, allowing the machine to sit firmly on the surface during use. Inclusive of anti-skid rubber pads, providing additional traction and prevent sliding. In addition, our foldable design allows you to instantly fold the peddler into a compact, portable unit the user can move it between rooms or bring it on the go. The strength of each user’s therapy can be adjusted with an easy tension screw, turning clockwise for high resistance and counter clockwise to lower the resistance. The adjustment in resistance makes this an ideal machine for leg or arm muscle toning and improving blood circulation.