XIANQI Product Description Material: PVC, plastic 1.Strengthens your core effectively and safely by helping you burn calories, improve your abdominal endurance and build a six pack. A six pack is certainly the biggest sign of a healthy body, and this effective exercise tool helps you achieve this with a few simple movements. 2.Two-wheel adjustmentA wider stand of the down roller provides more stability and control, especially helpful for beginners. The abs roller wheel is a great addition to your selection of home fitness equipment. 3.Non-slip Push Up BarsPush up bars are made of high quality stainless steel and covered with polypropylene, which is durable, soft and sweat-absorbent. It offers you a comfortable and secure grip. 4.10 mm thick knee padThe ab roller offers one of the workouts to strengthen your abdominal muscles and core. This product is made from high quality materials and comes with a super thick EVA knee pad mat for added comfort. 5.PORTABLE AND EASY TO ASSEMBLEUltra lightweight and easy to assemble abdominal exercise roller that allows you to reach your fitness goal anywhere. Perfect for a home gym, but also practical enough to travel with you. color: blue Size: Wheel diameter 16.5cm handle 12.5cm Delivery Quantity: 1 Piece