6 soft & absorbent prefold nappies made of 55% bamboo and 45% unbleached cotton, woven with a lint-free gauze weave for durability and softness. Fit perfectly inside of nappy covers without folding it over length-wise. Buttons prefolds are 4x8x4, which means there are 4 layers on each side panel and 8 layers in the center panel, making them highly absorbent. This material is sensative to heat, and machine drying may cause shrinkage. Bamboo Prefolds about 35% from sizes shown below when washed. Prep: Wash and dry prefolds 2 times before using. This will remove the natural cotton oils and help the nappies reach full absorbency.