80cm Suitable for: weight 3-6KG
90cm Appropriate for: weight 6-10 KG
100cm Appropriate for: weight 10-14 KG
110cm Suitable for: weight 14-18KG

Diapers can be used alone, if the baby's urine is too much, you can use with inserts together, put a thin insert inside
But diapers can not fix inserts oh.
Once the diaper is wet, it is necessary to change it on time and not use it at night.
The ctoch is 3 layers, water resistant, but other parts are like normal underwear oh!