Insta-Bed 3 in 1 Twin/King Combo Bed with External AC Pump Inflated Dimensions: 73" x 40" x 9.5" (x2) Powerful external AC pump for fast and easy inflation and deflation. Multiple configurations: Raised Twin, Standard King, Two Standard Twins Binto style carry bag included Secure press-lock valve maintains pressure. 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.