Remember, not to use it for kids or anyone for that matter because when the w113 was introduced in Europe there was no mandate to use seat belts therefore none were developed for the seats , particularly the Kinder Seat. Only those SLS produced for US market did belts have to be fitted, but still not for the Kinder Seat. Actually small children fit fine and the foot well fits them just right. With our (US) seatbelt laws, our small kids must be in an approved DOT child car seat. However, for adults, backseat belts are not against the law if not being used while car is traveling. So the Kinder Seat is an option that, when at car showed, I get a lot of questions about mind. Bob