Exactly what you need for a travel cot: small foldable, lightweight, easy to slide in a sheath. Our dwarf falls asleep in the day care center and it even on vacation, we take them. He sleeps on super without this mattress are the travel beds but very hard.
For in the long run and over the mattress is nothing, she makes sure not the best sleeping environment since it is covered with a plastic-like coating. Nevertheless, in childcare and holiday in portable crib definitely a must!