Toughen up your upper body workout with this Double Abdominal Wheel with Kneeling Mat Double wheel design gives you better balance when rolling Comes with a foam kneeling mat to protect your knees Wheels are coated in PVC for a long wearing and grippy surface Thick foam and textured design on handles gives a comfortable non-slip grip Roller diameter measures 140mm Mat diameter measures 24 x 16cm Save 55% on this Double Abdominal Wheel with Kneeling Mat and get abs of steel.