Thank you for viewing. This is a carrycot that can be attached to the Cybex Priam frame. Usable from birth to 6 months, up to a maximum of 9kg. This product is not sold in Japan, so my father-in-law bought it in Europe and personally imported it to Japan. I purchased it in July 2021 and used it until around 6 months old, but I didn't use it that much due to the COVID-19 pandemic. Even for newborns who cannot yet hold their heads up, it is fully flat, so you can go out without putting a strain on the baby. Even when the baby was crying, they often fell asleep when I put them in this and went outside. I didn't want it to get dirty, so I used a separate Stokke waterproof sheet and sheet, and washed them every time, so I don't think there are any noticeable stains on the mattress. If you need the waterproof sheet and sheet, I will include them. However, there are yellowing and stains on the sides and foot area that cannot be removed, so please refrain from purchasing if you are concerned or are a perfectionist. Returns and exchanges are not possible for used items. It originally cost 70,000 yen + a considerable amount for shipping to Japan. Thank you. Number of riders: Single rider Weight: Up to 5kg (lightweight)