Perfect for different venues,which is also the ideal exercise equipment for old and young men and women. Features: Built-in stainless steel pipe and adopted silent bearing. Dual EVA glide wheels and high toughness ABS wheel frame to help with good balance. Strong structure provide excellent rolling motion stability,stable and safe.(Weight capacity: Max.150kg/330lb) High density EVA handles for soft and comfortable grip. Anti-slip textured EVA wheels with strong grip,and do not damage the floor easily. Easy to use,simple forward and backwards motion,no complex learning to use this. Equipped with knee pad provides good protection for you. Detachable design for easy carry and storage. Specification: Abdominal Roller Color: Black/Blue (optional) Knee Pad Color: Black Material: ABS & EVA & Foam & Stainless steel Abdominal Roller Size: 30*15cm/11.8*5.9in Abdominal Roller Weight Capacity: Max.150kg/330lb Knee Pad Size: 33*16cm/13.0*6.3in Package Size: 35.5*19*5cm/14.0*7.5*2.0in Package Weight: Approx. 0.55kg/19.4oz Package List: 1* Abdominal Roller Wheel 1* Knee Pad