[Upgrade Ab Roller Double Wheel]This Ab roller training has two 3.94 inch thick wheel supports, front and rear wheels, and good weighing performance of 220lbs. Elbow support for rolling and better control. [Automatic Rebound Design]Built-in high elastic mute spring, which helps reset when bouncing back, So its more convenient and controllable to use, effectively protect muscles from strain during exercise. buvyuotu [Multilayer Material Roller Wheel]Five layer materials, including anti layer, reinforcement layer, damping layer, mute layer, and noise reduction layer. Good sound insulation effect, no damage to the floor. The detachable handle uses thick foam to achieve comfortable holding, sweat wicking and convenient storage. Includes a 13.4 x 6.7 inch foam pad to protect your knee. [Snap Design]Convenient assembly, snap fastener for supporting iron rod link, making it more convenient and firm to use, without loosening and falling off like screws. [Efficient Exercise Equipment]Ab workout equipment with timer, helps tone and shape your arms, chest, abs, back, hips, and legs muscles. The Ab roller kit helps men and women burn fat and shaping your body in your home, office, gym, or outdoors. Colour:Orange Material:plastic Package Contents: 1 * Ab Roller Wheel 1 * kneeling mat 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.