AppleCheeks Little Bundles are made of an outer layer of breathable, waterproof polyurethane laminated polyester (PUL), sewn to a butter soft microfleece inner layer, so that only the softest material touches your babys delicate bum. Taking advantage of recent advances in the textile industry, they combine form with function, providing you with the best fitting, most-effective reusable diaper on the market to date. Two layers of ultra-soft fleece give you the ultimate in comfort and absorbency! Fold this insert from AppleCheeks into thirds and you get six layers in the soaker zone. Bamboo is perfect for the heaviest wetter as it retains twice as much moisture as cotton alone for its weight! And plus bamboo's antimicrobial properties make it the healthy choice for your baby's bottom. Bamboo is the cloth diapering choice! Includes 1 Bamboo Insert and 1 Size 2 Cover (18-40lbs).