Roll up, roll up. Get a wheelie good deal on this Double Wheel Ab Roller and Exercise Mat Challenge your abs with this ab roller and make your workout versatile Double wheel design keeps it more stable for safer rolling Foam coated handles give a better grip and take the pressure off of your hands Exercise mat gives your knee cushioning and stops them from slipping Wheels are made from TPE See images for measurements Save 43% and get a roll on with this Double Wheel Ab Roller and Exercise Mat - only 16.99 pounds.