The product arrives in a vacuum seal packaging. For the best experience, let it sit for 24-48 hours before a child uses it. Don't worry if it doesn't look perfect immediately; the vacuum packaging might take up to 2 weeks for mattresses and pillows to regain their shape. For any creases, follow the care instructions to iron them safely. All Monboxy fabric covers are equipped with zippers, allowing you to easily remove and wash them according to the care label instructions. Please note that the foam cannot be washed or ironed.