Pedal Exerciser by Dynarex is ideal for leg and arm muscle work outs. The resistance is easy to adjust, simply turn the tension screw to make the exercise peddler easy or harder. This exerciser machine is great for beginners or for those trying to increase mobility and the strength in their arms and legs. The base of the peddler has four non-slip rubber grips. These grips keep the pedal exerciser in place by preventing sliding while protecting surfaces. The foot/hand rests have loops that help secure your feet or hands in place so your exercise motions are smooth and safe. The attractive powder-coated finish is easy to wipe clean. The Pedal Exerciser by Dynarex requires minimal assembly and can be done without special tools. The over-all dimensions are: 21" long, 11" wide, and 17" high.