3-Chamber Hamster Maze - Large Version developed, especially for Syrian Hamsters. The doors, which around 2.7 inches(ca. 7 cm) in diameter, it's big enough for a Syrian hamster to slip through comfortably. Measurement: 12 x 10.5 x 5.1inch(ca. 30.48x26.67x12.95cm). Reminder: Before purchase please make sure your cage or tanks have enough space to set it down since it’s way bigger than other mazes on Amazon. It's recommended for Syrian Hamsters, Teddy Bear Hamsters, Gerbils, Mice, Mouse, Degus | Changeable 3-Chamber Hamster Hideout - Comes with 2 entrances and 3 rooms, meanwhile, we designed a removable piece and it can transfer 3-room to 2-room per your wishes if you want to put a reasonable size cage accessory or other items into the hideout. It's recommended for Chinese Hamsters, Robo Hamsters, Dwarf Hamsters, Campbell Hamsters, Gerbils, Mice, Mouse, Degus or other similar-sized small animals | Multi-functional Activity Mazeland- Designed 3 big rooms, roof platform & rooms are easy to access like an underground tunnel & maze, highly mimic hamsters wild burrow to stimulate their instinct to hide & explore. Meanwhile, 3 chambers can be used by hammy's wishes, be a bedroom to sleep or hide-away, or be a storeroom for food. Also, provide a dark surrounding in the day for hamsters to take a premium sleep | Removable Lid - The removable roof of the house lets you easy to find where your furry friends sleep without disturbing your hamster or check the storeroom to see has any perishable foods and remove them as needed | High-Quality & Well-Made Craftsmanship - Made from European Imported Birch Plywood, built by the tongue and groove method without nails, and be sanded each corner to smooth. Safe & enjoyable living to keep their well-being