The Cocoonbaby Protective Cover Sheet protects and extends the life of your Cocoonbaby thanks its Perlam Fabric technology. The protective sheet is both highly waterproof and breathable, this allows it to repel and liquids and protect the Cocoonbaby underneath, the breathable fabric also prevents your baby getting to hot at night and helps to keep them cool to prevent overheating. The sheet fits the Cocoonbaby easily by slipping over the top using its elasticated rim and can easily be machine washed. The Cocoonanbaby Protective Cover Sheet will help maintain the longevity of your Cocoonbaby while also ensuring your little one will have a comfortable nights sleep.