Single futon mattress (Crookes (S10))

We're given away a surprisingly comfortable single futon mattress in a navy blue cotton cover. The cover has a couple of small tears at the top, I think where velcro was previously attached. It is 190cm tall and 75cm wide. We've had it folded up for quite a while and used as a spare bed on the floor for guests, for which it is actually very comfortable, but could also be useful for a camper van or caravan.