Comfy Cotton’s 100% cotton Chinese Pre-fold diapers are designed with three panels. The middle panel has six layers of cotton and the two outer panels have four layers of cotton each. China refers to the kind of cotton the diapers are made from. Pre-fold refers to the fact that the seams between the panels indicate where the diapers are folded. (No they don’t come to you pre-folded. But there are just two seams. It’s an easy fold!) The diaper comes in two sizes. Newborn diapers suit most babies until they reach about 18-20 Lbs. Most babies reach this weight some time between six months and one year of age. Toddler diapers take your baby all the way to toilet training.