The Organic Cotton Mattress for the HALO Bassinets Swivel Sleeper is made from the finest non-toxic materials with the comfort and safety of little ones in mind. Its cover is made of 100% certified organic cotton fabric with a food-grade, water-resistant coating. Easy-to-clean and stain resistant, our Organic Cotton Mattress also provides a hypoallergenic dust mite barrier. To provide the safe and comfortable support little ones need, uses NO flame retardants and emits NO harmful chemicals. It does not use any vinyl or PVC, and is Phthalate-free. Made specifically to fit the HALO Bassinets Swivel Sleeper with its hourglass shape, it is an ideal safe sleep surface.