Niteangel Natural Hideaway Grass Toy, Chew Toy, Grass Tunnel for Hamster, Mice, Gerbil and Other Small Animals Hand-woven grass activity center for your small pet. Cater for the natural instinct of hamster to burrow, explore and nest. 100% all natural couch grass. Suitable for Guinea Pig, Large-sized Hamster 8-inch Long with a 5-inch Diameter.