Alfie Pet by Petoga Couture - Jolly Run-About Exercises Ball with Track for Small Animals like Dwarf Hamster and Mouse - Color: Orange, Ball Size: 4.5 inches Jolly Run-About Exercises Ball is a fun way to exercise your small animal pets. They will love it and be entertained for hours. Ideal for guinea pig, rabbit, hamster, bandit, ferret, mouse and other small furry animals. Tracks can be easily assembled in minutes to different shape and configuration. Easy to assemble by fitting 12 pieces of track together. There are 8 pieces of curved track and 4 pieces of straight track. Each track is 4.25 wide and 1.5 tall. The Run-About Exercises Ball measures 6 in diameter. Entrance hole is 2.75 in diameter. Alfie is a registered trademark and is exclusively distributed by Petoga Couture. Alfie trademark is protected by US Trademark Law. Use is strictly prohibited. Other seller offerings are counterfeits, they will not be identical to what is advertised here. Petoga Couture ship from US thru Amazon therefore all orders with them are eligible for FREE Super Saver Shipping and Prime Shipping Upgrade.