Features: 1Dual Wheel: Roller is designed with 2pcs 3.94 inch thick wheels that are broader in the front and back, making them more stable and capable of handling up to 220 lbs. 2Automatic Rebound: Equipped with a high elasticity, and silent spring, roller assists in returning to its original position, making it easier and more controllable to use. 35 Layers Wheel: Made with 5 layers of different materials, including slip proof layer, strengthening layer, damping layer, silent layer, and noise reducing layer that provide excellent noise cancellation and floor protection. 4Easy Assembly: Comes with a support iron rod connected by a locking button, making it easy to assemble, more convenient to use, detachable handle is covered with thick foam. 5Workout Equipment: Highly efficient training device with a timer that helps tone your arms, chest, core, back, hips, and leg muscles. Perfect equipment for both men and women. Package included: 1 x Rebound&nbspAb&nbspWheel 1 x Timer 1 x Grip Bracket 1 x Kneeling Pad 2 x Hand Support Pads 1 x Manual