【Christmas Discount Price】 UNICOM's pet oxygen chamber "Pet Oxi Hotel," size M. Includes a dedicated mat, dedicated tube, dedicated bag, mesh skylight, transparent skylight, and pegs. Oxygen concentrator and oxygen meter are not included. - Type: Pet circle/oxygen chamber - Accessories: Dedicated mat (M), dedicated tube (2.0m), dedicated bag, mesh skylight, transparent skylight, pegs - Brand: UNICOM Purchased in early September 2025 and used until mid-November. A dedicated mat was placed inside the Pet Oxi Hotel, and a cage was placed on top of it. The pet did not directly touch the hotel or urinate/defecate inside it. There are marks from the dedicated mat on the bottom of the Pet Oxi Hotel. Also, there is a small gap at the dedicated tube attachment point. Although neither should affect use, please refrain from purchasing if you are concerned. I believe there are no other noticeable stains, but please check the photos and purchase with the understanding that this is a used item.