Filled with a supportive and cushioning convolute foam, otherwise known as “egg crate” foam, the unique material helps to evenly distribute your pet's weight while alleviating the painful pressure on his muscles and joints. It's topped with a silky-soft faux fur that he'll love to snuggle up on, and the bonus of the foam core is that it keeps him warm in the winter and cool in the summer. Great for senior and disabled pets, the “step-on” design allows them to easily mount without the need to jump.