🐾 Unleash the Fun with Every Spin! Hangs securely on mesh cages. Ideal for small animals' exercise needs. Wire mesh design prevents injuries. Perfect for indoor and outdoor play. Choose from 4 vibrant colors. 4 colors available 4.5" diameter Exercise-friendly The Prevue Pet Products SPV90011 Wire Mesh Mouse Wheel Toy is a 4-1/2-inch diameter exercise wheel designed for small animals. Its innovative wire mesh design ensures safety by preventing feet and tails from getting caught, making it perfect for both indoor and outdoor use. Available in four assorted colors, this wheel can be easily hung on mesh cage sides, providing a fun and engaging way for your pets to stay active.