S: weight 3-6KGM: weight 6-12KGL: weight 12-18KG The diapers can use alone,If baby urine is a lot ,you can use with inserts together,put a thin Inserts over the insidebut the diapers can not fix inserts oh.Once the diaper is wet,need change it in time ,and do not use it at night.The cloch is 6 layers,waterproof,but other parts is like ordinary underwear oh!!!Color:as the showPackage:1*Baby Cotton Training Pant