Ruggies are an amazing solution to rugs that slide, flip and flop all over the place. Rugs that slide, flip and flop are just dangerous. Ruggies solves that solution by keeping your rug down and in it's place. It will even secure the rug while you're vacuuming. It uses a tacky grip polymer technology that won't leave residue behind or damage your floors. You can reuse the Ruggies over and over again. They are made of high quality, durable polyurethane, polyester and paper. Ruggies includes 8 grippers and 8 adhesive strips.