Intex Downy Airbed with Built-in Foot Pump, Twin Inflatable twin airbed ideal for camping or a spare bed; Waterproof flocked top with 14 gauge vinyl beams Wave beam construction eliminates uncomfortable surface bumps ; 2-in-1 Valve, built-in bellows foot pump for easy inflation 300-Pound capacity, measures 8.75-Inch tall Location, temperature, and humidity will affect the airbeds firmness. Airbeds will need to be occasionally re-inflated (topped off) to maintain desired firmness when used for more than a few days as vinyl tends to relax over time Measurements will vary based on customers inflation. Airbeds are measured from the widest point including the beams (bulges) on the side and off the tallest point from the floor including built-in pillows if applicable