One size fitted diaper has cotton/polyester velour outer, hidden layer of bamboo/cotton fleece, and lining of cotton/polyester velour (80% cotton/20% polyester). Sewn in soaker layers of heavy hemp/organic cotton fleece and snap in soaker of heavy hemp/organic cotton fleece, bamboo/cotton fleece, and topped with velour. Six layers of absorptive material in diaper body plus four in the snap in soaker. Great for night time use. Requires a cover for complete waterproofing.