Intex Comfort Bed - Rising Comfort Twin Airbed with built-in Electric Pump 20.8 gauge flocked top 14 gauge vinyl beams 16 gauge vinyl bottom and sides Built-in Electric Pump 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