This mattress will give your little one a comfortable night’s sleep all year round. It’s a flippable mattress with two sides to suit the season and ensure great comfort no matter the weather. One side is ideal for warmer months because it’s made of flax to ventilate and lead body fluids away from the child. The other side is made of wool to provide a soft, warm feel during the colder months. The mattress has an antibacterial cover that reduces the appearance of dust mites. The cover is designed with a zipper so you can easily remove and wash it.