All-In-One Cloth Diapers, aka AIO cloth diapers, most closely resemble disposable diapers in terms of use. The entire diaper is just one piece. It's easy to put on baby, and when it's time to change baby's diaper, change the entire thing.
AIO style diapers have a waterproof cover with built-in inserts. This means the inserts are sewn into the diaper, so no extra pieces or steps. bumGenius Freetime and bumGenius Elemental are all-in-one style diapers. Many people consider all-in-one cloth diapers to be the most convenient style because there is no need to stuff inserts for absorbency.
All-in-one cloth diapers are very easy to use, especially for those who may be resistant or new to cloth like babysitters or daycare.
The newest All-in-one from the Cotton Babies family of brands is the Elemental Joy One-Size Cloth Diaper.