Sleep soundly knowing your child is doing the same. This organic mattress is specially made to fit the Stokke Sleepi after it's been converted to a larger junior bed. It's comfortable and healthy, providing excellent support with all-natural materials. The inner layer is made from certified organic coir, which is made from coconut husks coated in natural latex for breathable support. The coir is surrounded by lambswool, which provides insulation and natural dust-mite protection. And a removable