Leaman's Nedi Model Number: LYF-375 This is a type that is installed with a seat belt! Please see the URL below for instructions. (https://leaman.jp/pdf/manual/lyf375_snp.pdf) Usable from newborns to 4 years old. Used for about a year. There are some areas where the color of the belt has changed. Please check the images. Removable parts have been washed, and the main child seat will be wiped down with alcohol before shipping. The seat itself is very clean because it was used for a short period of time. I would be happy if someone could use it＾＾ Please feel free to ask if you have any questions! Thank you.