General Rug Pads
General rug pads are made from a slip-resistant webbed material and largely prevent your rug from sliding out from underneath you when you step on it. You can order a roll and cut it to size or order a pre-cut pad in the specific size you need.
Premium Rug Pads
Premium felt or polyester-blend pads are coated to help them stick to the floor, offering extra protection against movement. They also help to prevent scratches under the rug and are best for adding comfortable padding. Both types of rug pads can be used together, but you should definitely have at least one under every rug in your home.