Features: Made of high quality bamboo material, nontoxic, safe to your pets. A good toy for small pets to play or crawl in the cage. The opening holes design make it easy for pets to enter and exit, preventing pets from getting bored. The surface is smooth, convenient for pets to pass through safely. Suitable for hamster, a great gift for your lovely pets. Specification: Condition: 100% Brand New Material: Bamboo Color: As shown in picture Size: Small, Large (optional) Small Size: Approx. 8.5*6 cm / 3.4*2.4 in Large Size: Approx. 12*7.5 cm / 4.7*3 in Weight: Approx. 62.3-77g Package list: 1 * Pet Toy Note: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.