This is a seatbelt-fixed type. Although it's a product from over 5 years ago, it's only used when my grandchildren visit, so there are no noticeable stains, and it functions perfectly. It has been washed and disinfected. - Brand: Aprica - Mesh material, Color: Red/Black - Type: Child seat The body size can be adjusted by the position of the belt. There is no instruction manual, but it can be attached and detached using the stickers on the seat. Thank you for looking.