They are versatile. The inner layer is an absorbant soft velour feeling material. It is a thick single layer and can handle small amounts. This material is sewn into a gusset, which serves to hold diapers or pads in place, and helps prevent leaks. You can insert pads, in the pocket for an all-in-one type diaper, or use them over diapers or soaker pads as a cover (as I do). They can cover disposables, cloth, or say, Babykins or DPF velcro diapers with soaker pads. They work however you want them.
dlm