100% polyester fleece. Easy machine wash and dry. These are wonderful for dogs and cats both. Burrowers love to snuggle down in them but they are also great for lying on. Perfect for home, car and travel. They make great crate matts and you can easily add a pillow for extra padding. Each one is individually cut and sewn. Reversable. Approximately 22" x 28" Prints and sports teams also available.