Ab Wheel Roller,For Full Body Exercise, strengthen & tone abs, shoulders, arms, and back Comfortable plastic grips. Effectively develop & strengthen the stomach area Ab Roller is an effective exercise device designed to provide one of the best upper body and core building exercises Double wheel design with plastic roller wheels offers added stability, control and support Anti-slip sweat resistant thick padded foam grips for added safety and a sure grip Our AB wheel is made from high quality hard plastic and steel for durability, safety and load capacity. Roll the ab wheel trainer straight out away from your knees