An infant mattress includes a core and a cover. The core is made from a resilient material and has a top surface and a bottom surface. The top surface is inclined with respect to the bottom surface and includes a depression. The cover covers the core and includes a mesh-like material that forms an inclined...http://www.google.es/patents/US7752691?utm_source=gb-gplus-sharePatente US7752691 - SIDS-preventative mattress
