As one of the gym accessories to fine tune your six pack, this ab roller is a great tool to work on attractive, defined ab lines with precision, more challenge and depth, thanks to slightly rounded wheel and therefore smaller surface area. Fine workmanship and perfect style. The workout roller features a textured non- ab roller wheel that grips any floor surface firmly. This home workout equipment comes with a supportive knee pad to effectively protect you from any injury due to falling. With uniquely designed slightly rounded ab roller and the width of 2 inches, the ab wheel takes your balance and dynamic stability to level, and is perfect for more advanced ab workouts for a rock-solid core. High Wear-resistant and durability. Material: ABS+foam+steel+rubber colour: blue Package Contents: 1 x abdominal wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.