This is a "10-benefit comfort keeper" from Nobi 15, known for its products for sugar gliders. It's for insulation and odor control. I assembled it once, but it was too big for my house, so I'm selling it. I didn't intend to sell it, so there are many scratches from the assembly process. Also, as shown in the photos, I have repacked it using packaging materials that were opened haphazardly. I would appreciate your understanding. Please understand that this is a used item, and those who are sensitive to such things should refrain from purchasing. All accessories, including the instruction manual, are included. Please purchase with the understanding of the current condition.