There is a removable foam mattress. Upper material: 100% cotton, lower material: 100% Minky material. Protects the child from falls and provides a great and safe place to rest and sleep. Can take over the function of a bed while driving and teaches the child to lie on its side. The ergonomic shape of the nesting provides comfort for both mother and child. Filling is made of anti-allergenic elastic silicone, which is soft but not slippery. There is a zip so that the filling can be refilled. The materials are breathable and made of high-quality materials. Available in rich colors. Dimensions: Nest size 80 x 45 cm, mattress size 70 x 30 cm. Intended for children from birth to 6 months.