I purchased the latest model last year for 33,000 yen and used it for about 4 months. It is a Baby Carrier Three QD (QD) in black. It does not have a sleep curtain. I cannot answer detailed questions about frequency of use, etc., beyond what is stated here. There is some fuzzing and wear on the rubber of the 11th photo. I have taken photos of other areas of concern. There are no other noticeable scratches or stains, but this is based on my personal assessment. Please only purchase if you are satisfied after checking the images. I do not have any pets, and I do not smoke. I will only ship the items shown in the images. It has been home-cleaned, but I did not use organic detergents or baby laundry detergents. If you are concerned about minor details or are a perfectionist, please purchase a new item. I am a private seller, so I may have missed something. Please only purchase if you understand that this is a used item. I will fold it up small for shipping, so please be aware that there may be wrinkles.