SnooZZy Mattress 2000 Give your dog a soft and comfortable place to nape with the SnooZZy Matress. This mattress will keep dogs and cats cool in the summer and warm in the winter. The bed is completely machinewashable. Machine wash in cold water on the gentle cycle. Wash separately with no bleach, and tumble dry low. NonSkid backing.Size: 22.75" x 16".