The pile of the rug dampens sound, creating a snug feeling, and is soft to walk on. Children's play can place tough demands on surroundings, something that also applies to rugs. That’s why the rug is made from durable, stain-resistant synthetic fibers which are easy to care for. We know that children are extra sensitive, but not to worry. This product has been tested and approved ‒ and is completely free from substances that may harm your child's skin or health. The rubber backing keeps the rug in place when the child runs/plays on it.