Childhome Heavenly Safe Sleeper Mattress is a polyether foam mattress with a fabric cover made ofultra-fine woven fabric that is highly breathable. This cover has a better air circulation than regular covers and thus better breathable properties.More than just a standard fabric, it is made with all the essential hygienic, anti-allergic and breathability properties a mattress to provide your baby with a clean, healthy and safe sleeping environment.The foam mattress uses high-quality materials to create a good, resilient and firm sleeping surface, which is essential for a comfortable and good night sleep. Made out of a high-quality and resilient polyether foam. The mattress foam core serves as a firm back support, but has a very soft touch due to the ultra-fine woven mattress cover. Polyester is anti-fungal, anti-allergic, anti-bacterial,giving no opportunity to unwanted guests, fungi or any other forms of infestation. Dimensions: 140 x 70 x 11 cm EN-Norm: EN 16890:2017, OEKO-TEX:Standard 100 Comes with a removable zip mattress cover (shown in image) *This mattress cover is a removable fabric cover for the mattress foam. It is NOT a mattress fitted sheet or mattress protector. Recommended for 0+ months. Composition: Core: 100% Polyether Foam(PE 21kg/m) Cover: 100% Polyester Maintenance: Removable cover washable at max 60