Overview Protoner is one of leading producers of fitness gears and accessories. Being a renowned brand in the industry, it is always an easy choice for the customers, as they know about the build quality of the products. Protoner double exercise wheel with knee cushion is one of the best fitness equipment that helps you in attaining the perfect abs. You can order this product through at affordable rates. Contents as the name suggests, the main content of the Protoner double exercise wheel with knee cushion set is the exercise wheel itself. You will also get a mat for knee cushioning to prevent from getting hurt while performing an exercise. Design the design and manufacture of this product are done with exceptionally good materials. The handles are cushioned to get a firm but softer grip. The mat and the handle cushions help you in preventing blisters. The main part of the set is the two fibre plastic wheels made up fine quality materials. Safety this is an inexpensive but highly effective fitness equipment for working out your abs. A careful technique has to be adopted in order to avoid any strains or other injuries. It is not recommended to perform any exercise on this product without proper training.