Bigger giant roll-a-nest is an all natural grass hide-out that provides the ideal spot for your pet to play and rest. Each nest is made of natural sisal fibers hand-woven onto a sturdy support frame. These natural sisal fibers are safe for your pets to graze and chew upon. The perfect snuggling spot for dwarf rabbits, guinea pigs, ferrets, chinchillas and pet rats. Connect fun-nel tubes directly to your new nest and watch the fun.