Prefolds, also known as Chinese prefolds, Indian prefolds, and DSQ (diaper service quality) prefolds, are rectangular diapers made of several layers of fabric, sewn into thirds, the middle panel having extra layers. The amount of layers is noted as 4x8x4 and 3x6x3. The 4x8x4 has extra layers making it more absorbent. These are the only types of prefolds I carry. They come in bleached and unbleached. I only sell the unbleached variety as the cotton bleaching process releases Dioxins, as discussed on the Why Choose Cloth page. Prefolds can be folded to fit inside a wrap-style diaper cover. They are not waterproof and all require a cover. Do not buy store-brand prefolds- they are not 100% cotton and have very few layers of fabric so they will not be very absorbent. Prefolds will be flat when purchased, and will quilt up after several washings. They become more absorbent with each washing! Prefolds are the most economical cloth diapering option.