Stokke® Sleepi™ Bed MattressA mattress where they'll sleep like a baby. For optimal safety and comfort, it's important that a baby mattress is high quality, firm and breathable. A breathable mattress ensures that the air can circulate and remove the carbon dioxide exhaled by the baby. In this way, overheating is avoided. This is especially important when the little ones turn over onto their stomachs while sleeping and breathe into the mattress. The Stokke Sleepi Bed mattress is