1.moulded easy grip handles are nonskid 2.outside: PVC 3.main material: PP 4.exercise wheel, AB wheel, AB roller Abdominal Wheel,AB wheel, exerciser wheel 1.moulded easy grip handles are nonskid 2.outside: PVC 3.main material: PP 4.exercise wheel, AB wheel, AB roller Abdominal Wheel,AB wheel, exerciser wheel