Handmade, 100% natural materials, no glue, plastic or metal. Hamster grass ball is made of all natural sisal, cornhusk and seagrass which your pets will find irresistible.Rabbit exercise ball is suitable for playing and nibbling, to help prevent boredom.Extra deep base for deep filling with litter so pets can tunnel and burrow.Ideal for rabbits, bunny, guinea pigs, gerbils,mice, ferret, birds and other small animals.Promotes clean and healthy teeth while satisfying your pet's natural instinct to chew.Model No: ESG16215