The clear exercise ball is great for both hamsters and mice and is a great way for them to have some time outside of their cage. Open the lid and give your pet some time to get used to the ball. Close the lid and watch as the little guy speeds around the house. Thanks to the slits, your pet will have plenty of air while they exercise. The hamster ball is a great alternative to the classic wheel. Please note: Give your pet time to get used to the ball. Use only under supervision and do not push the ball around to avoid stress. Please make sure that your pet does not bump into obstacles. Hamster Ball in Detail - Diameter: approx. 18.5 cm - Material: Plastic - Weight: approx. 220 g - Colour: Transparent, white Clear Exercise Ball for Small Rodents - Exercise toy for hamsters and mice - An alternative to a wheel or letting your pet run free in the home - Keep an eye on your pet thanks to transparent material - Running ball with plenty of slits for ventilation - 2 lids makes opening and