Fitted diapers are a great option for overnight use because they have 100% absorbency, but they can also be used during the day without a cover for a period of time but will eventually become damp. A PUL or wool cover is recommended to be completely waterproof.
These diapers use a fold over rise system and large fold over wings that allows the diaper to be adjusted from infant to potty.
Hybrid fitteds are made with a hidden layer of polyester fleece which adds a mild liquid barrier while maintaining breathability.
The outer diaper is either cotton or polyester knit; the inner diaper is either cotton or bamboo velour. The hidden layer consists of either bamboo/hemp fleece (regular fitted) or polyester fleece (hybrid fitted).
A sandwich-style snap-in soaker consists of two layers of bamboo/hemp fleece with matching velour on top. A matching contoured booster is included with each diaper that matches the outer diaper and consists of a layer of Zorb and a layer of bamboo/hemp.
All fitteds use comfort elastic casing for all elastic points. This prevents red marks on little legs. Standard casings or ruffled casings are used. Picture below shows a standard casing through the legs and ruffled casing at the back.