Ab Wheel Roller & Tummy Trimmer for ab exercises for men / women strengthen and tone your abs shoulders arms and back with the dual ab wheel. The unit teams up a pair of non skid wheels and two easy-grip handles.To use simply get on all fours grab hold of the handles and glide the wheels back and forth across the floor. At various points during the exercise you'll work every major upper body muscle group as your torso adjusts to the movements. The dual ab wheel comes with an instructional fitness guide. Two non-skid wheels for added stability. Cushioned rubber foam grips for a comfortable grip. Strengthen and tone abs shoulder arms and back.