Knit. FP Elite Hybrid Fitted Cloth Diaper. OSFM (One size fits most), can fit babies from 0 to 7 years. 100% breathable materials allow air to circulate in the nappy area. Highly absorbent soakers made from organic bamboo topped with cotton velour. Water-resistant. Depending on baby’s output, can stay leak-free for up to 8 hours. Gentle elastics. Sturdy plastic snaps. Hypoallergenic. Breathable. Reusable. Contains a hybrid fitted diaper shell, organic bamboo fleece soakers and booster, topped with cotton velour.