ZZZs Sleep Sack The ZZZs hybrid sleep sack/hammock is made of a plush, suede-like fabric that's so luscious and inviting, it might just be the coziest place in the cage. Your ferret will love it! Features: Attaches to the cage with four clips Use inside or outside the cage Space-saving, elevated design Great for climbing and play, promoting exercise, and reducing cage stress Soft swinging motion lulls your pet to sleep Den-like comfort for a sense of security and deeper, more restorative sleep Soft, pastel shades Hand wash and air dry Item Specifications: Dimensions: 171/2L x 13W Color: Assorted ZZZ01 48081999011