FATPET&reg; Pet Small Animal Playground Wooden Maze Amusing Entertainment Toy for Mouse and Dwarf Hamster Measure: 25cm x 25cm x 7cm / 9.8'' x 9.8'' x 2.75'' Entrance holes are 1.5" in diameter This maze has 16 entrance holes and 13 compartments, perfect for your small animal pet to relieves boredom and increases activity level. Fun playground made with natural safe wood material. Ideal for hamster, mouse and other small furry animals Relieves boredom and increases activity level