Choose the exact size for your baby. Our sizes are not like clothing sizes - they are more true to your baby's age. For safety reasons, do not buy a larger size for your baby to grow into.
1-3 Month size fits babies about 1-4 months & up to 26" tall
3-9 Month size fits babies about 2-10months & up to 30" tall
9-24Month size fits babies about 8-30months & up to 36" tall
2-3 year size fits older babies up to 44" tall
In Europe, this size 3-9months is 70cm or (0-9mo) we feel it is a little large for newborns, but some babies start wearing the kindersacks around 2 months so this is perfect.
Many are the side-zip design which has many benefits. It allows the baby to be placed inside the kindersack gently and easily even while baby sleeps. There is safe & easy velcro (we never use buttons or snaps that baby could choke on) at the shoulders to ensure a proper fit and the zipper goes along the side and bottom to open flat. This design comes in the first 2 sizes (1-3month) and (3-9mo). Many customers love this so much they want the next size to come in side-zip also, however, it can't because once a baby is about 11 months old they can get themselves out of the velcro by themselves! So, all 6-24month and up kindersacks is always center-zip.