Thank you for viewing! Material: 100% cotton (front and back) Size: Width 16cm, Depth 10cm, Height 10cm Window: Round, 5cm diameter Attachment method: Ring, carabiner, perch Please use according to your birdcage (^^) (Not included) Stainless steel is expensive, and you may already have it at home, so please replace or attach it yourself. Specifications: Cotton is inside the window side. All pieces have a stiff interfacing. Sponge on the bottom. ⚫︎Request: This is handmade by an amateur. There may be some imperfections in appearance, so please only purchase if you are okay with that. A lazy owner made this for my own parakeet using the fabric I had. But I wanted to use various patterns, so I'm selling the ones made with leftover fabric. You can turn it inside out and wash it in the washing machine! (Recommended to put it in a laundry net) Photos 5 and 6: Sponge is included on the floor, like in a pillow. Photo 7: For size reference (68g green cheek conure) Photo 8: A bell will be included as a bonus. Photo 9: A 10cm x 15cm board can be placed on the wall without a window. PP sheets are sold at 100-yen shops, etc. (Not included) A side-hugging heater (please check the size) can fit inside. Thank you for understanding that this is handmade by an amateur. (Please note that the parakeet is not included.)