Pet Hamster Bamboo Tunnel Tube Shape Toy for Playing Tooth Grinding(M) Features: 1.Made of quality bamboo material, safe, non-toxic, durable for long time use. 2.Multi-function toy, can be used for playing, tooth grinding, or nest. Hamster can shuttle, hide, or rest in the tunnel. 3.With holes, convenient for you to view its behavior. 4.Provide a comfortable place for pet to play, and it also can help it to keep tooth healthy. 5.Wonderful gift for small pet, like lovely hamster. Specifications: Condition: Material: Bamboo Color: yellow Options: S, M, L Size Length(cm/in) Diameter(cm/in) Hole diameter(cm/in) S 15/5.9 over 5/2 3.8/1.5 M 18/7.1 over 6/2.4 3.8/1.5 L 21/8.3 over 7/2.8 3.8/1.5 Package Included: 1 * Hamster Tunnel