Either alone or in combination with one of the Nattou playpens, this mattress is great! A 5 cm thick mattress made of microfibers. It can be used either with one of the folding beds of Nattou, or even alone, as it can serve as a comfortable and soft bed to lay down and put your little one to sleep. Ideal for trips and excursions anywhere: to the grandparents', to friends, on vacation!