Coleman Premium Double-High SupportRest w/Pillow Top and Built-In Pump, Queen 3 layers to keep bed square and more like a home mattress Removable pillow top for extra comfort Airtight System with Double Lock Valve so your mattress stays inflated Built-in electric pump for convenience Zippered carry/storage bag included Location, temperature, and humidity will affect the firmness of the airbed. Airbeds will need to be occasionally re-inflated (topped off) to maintain desired firmness upon initial use and when used for more than a few days as material tends to relax over time.