Design Feature. This product can easily be glued under any rug. The side facing the floor features tiny suction pores. These pores utilize the VACUUM TECH feature in which whenever pressure is applied from the top, air escapes and creates a low-pressure region within the cups. This produces an adhesive effect, which keeps your rug in place. Does Not Work For Rugs On Carpet Floors. Advantages. The rug anti curling gripper is less than 1/10 inch thick and inconspicuous after installing. Suction technology firmly sticks to the floor without causing marks or damage, and the gripper easily peels off the floor. It is convenient to wash, as you wont have to separate it from your carpet for cleaning. The rug tape adds extra comfort underfoot owing to the slightly bouncy nature of suction technology. Components. This package includes 8 pieces. Each piece is square in order to increase the surface area in contact with the floor. That leaves your kitchen, bathroom, and hallway much more secure. You can even use them outdoors to prevent slipping and flatten corners. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.