Kings Queen-Sized Self Inflating Foam Mattress. Inflates automatically - Comfy 100mm thick - 1900mm x 1500mm No pump required, the self-inflating foam does the work for you. It’s now super easy to enjoy a great night’s sleep. Simply roll it out, open the vents and you’re catching some serious ‘Z’s. At 1500mm wide, itt’s great for couples or sleepers who like a bit of extra room.