The Paw Inspired Washable Guinea Pig Cage Liners are perfect for keeping your guinea pigs or other small animals comfortable and healthy. Made of high-quality fleece, these liners are super absorbent and fast drying. The convenient buttons allow you to easily attach the liners together, construct tunnels, hideouts, beds, sleeping bags, and more. The bamboo charcoal odor control pad uses all natural bamboo carbon tissue to help control odors while keeping a natural and safe environment.