Features: The hammocks are made of polyester cotton, not easy to lose hair, can not afford the balls, does not fade, no stimulation to the skin of the pet, not allergical. Make the bed comfortable. Detachable design. Machine washable. Easy to clean and wash. Easy and portablely guinea pigs hideout to hangings with the bilaterally hooks. Single-side door designes with flexible function. This pet hammock will not take up too much space from the cage, but it still provides her with enough privacy and sense of security like nest. Its warm hammock suitable for all kinds of small animals: chinchillas, ferrets, rabbits and other small pet. Specifications: Material: Polyester Cotton Size: Optional: Small/Middle/L Size:Small: Approx. 14x12cm/ 5.51x4.72inch Size:Middle: Approx. 17x15cm/ 6.69x5.91inch Size:L: Approx. 22x21cm/ 8.66x8.26inch Color: Black, Blue Package Includes: 1pc Small Pet Sleeping Bed note: 1. Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2. Due to the different between different monitors, the picture may not reflect the actual color of the item.