Lee's Mini Kritter Krawler. Many small pets require a good physical workout. Lee's offers the most complete line of small-animal exercise balls to satisfy the needs of most small animals from dwarf hamsters to ferrets and chinchillas.
Lees Kritter Krawlers allow pets the freedom to roam while being safely confined and they quickly learn to maneuver around common household obstacles with ease.
Size: 5" diameter. Ideal for dwarf hamsters and pet mice.