A&E Cage's Small Multi-Hole Play Ball is tightly woven with all-natural plant materials to assure a cozy and durable hide-out and play ball for your mouse, hamster or gerbil to use. This Multi-Hole Play Ball is a perfect place for your small animal to replicate their natural instinct to hide, burrow, chew and, explore. By adding hay or any of your friends favorite treats to this ball can add hours of fun. This Multi-Hole Play Ball measures 4.5in in diameter. Tightly woven with all-natural plant materials Cozy and durable hide-out and play ball A perfect place for your small animal to replicate their natural instinct to hide, burrow, chew and, explore Adding hay or treats for additional fun Ideal for: mouse, hamster or gerbil 4.5in in diameter