SHOUNg Ab Roller Set - Fitness Wheel & Abdominal Carver To Workout, Exercise & Strengthen Your Abs & Core Two non-skid wheels for added stability and extended time of use. Our worry-free 12-month warranty and friendly customer service. Helps decrease your risk of muscular injury , Contoured handles to firm your grip. Dual ab wheel roller provides one of the best core and upper body exercises. Designed to strengthen and tone your abs, back, arms, and shoulder muscles. Burn fat quick while building muscle and tone , Now in beautiful gray, so you can look good while you work out!