Rug pads provide a durable, long-lasting foundation. Not only do they bring comfort and cushion to your rugs, but they also protect floors underneath and reduce movement, bunching and slippage. To prevent tripping and to allow the rug to taper to the floor, make sure the rug pad is about an inch shorter than the rug from all sides. Rug pads can be trimmed with a sturdy pair of household scissors.