Koos by jan better design lighter and safer koos is the new solution from jan for group 0 koos is the infant car seat that combines an extremely light weight shell with maximum safety made using breathable materials koos is very comfortable for the baby and easy to handle for parents the very stable light structure makes the infant carrier very easy to carry and also makes it safer for the baby as in the event of an impact the displacement is less than with a heavier infant car seat