Cloth diaper that has an inner absorbent layer attached to an outer waterproof layer with adjustable closures (either Velcro or snaps). All In One Diapers are just like disposable diapers except you wash them!
Used over prefold diapers and fitted diapers to make them waterproof. Diaper covers wrap around baby and secure with Velcro or snaps for easy use (no more pins!). Each diaper cover can be used several times without washing if allowed to air dry between uses. Diaper covers usually can be washed along with diapers (depends on brand and manufacturer suggestions).
Both diaper inserts and diaper doublers add extra absorbency to any type of cloth diaper. Often an insert is specially designed for a certain diaper and is meant to go inside a pocket diaper or All-in-Two and a doubler can typically be laid on top of any diaper as a little extra absorbent 'boost'. *Remember, never put microfiber directly against baby's skin as it can be too drying!
Frugal Diapering Tip: Reuse your small inserts as doublers when you baby outgrows them!