A two-tiered glass cage made of glass, perfect for small animals with ventilation holes. Thank you for viewing. I used to keep a Djungarian hamster for about 2 years, but I no longer need it, so I am selling it. There are two sizes: the large 450 and the small 360. The key in the center of the door is a little loose, but it can be used without any problems. There are some stains and scratches as I have kept it for 2 years. Instead, I am including a lot of small items. (The water bottle is yellowed, but it can be used.) @There is no running wheel. Please be aware of this.