The Sleep Safe Essential Pack by Aero Sleep consists of a mattress and a unique mattress protector. Thanks to Aero Sleep´s innovative technology, this Sleep Safe pack ensures your baby can breathe freely in a healthy and safe sleeping environment with the proper back support. The mattress is made of Airfelt®, an innovative material with an open structure that ensures good back support. The zip-off mattress cover is machine washable at 60°C. The removable mattress protector has a special, complex 3D honeycomb structure. Read more… Thanks to this technology, your baby lies on a layer of air, so that it can breathe freely even when it turns onto its tummy. Any spills from a nappy or spit immediately go through the honeycomb structure and are retained in the absorption layer. The impermeable film protects the mattress against stains and keeps your child dry at the same time. The entire mattress protector is machine washable at 60°C, which is a unique feature on the market.