Features: Carpet Gripper: A sturdy, double-sided, self-adhesive designed non-slip pad that firmly grips the floor so the rug doesn'for t slip away. Reusable: Carpet anti-skid pads are made of high-quality eco-friendly polymer PU, which can be washed and dried for use with long-lasting adhesion. No Residue: The carpet gripper will not damage the floor and the sticky surface will not leave residue on the floor when removed. Application: Suitable for hard floors including tile, ceramic, hardwood, laminate, etc. Works with rugs of any shape indoors or outdoors, keeping your rugs in place. Avoid slip and fall accidents and properly address annoying carpet problems. Package Includes: 4PCS/8PCS Rug Gripper Specifications: Material: PU Quantity: 4PCS/8PCS Size: As Shown note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.