Intex Comfort Top Full Airbed with Built-in Recessed 4D Pump Waterproof Flocked Top 14 gauge vinyl beams 16 gauge vinyl bottom Built-in Battery Pump Comfort Top Construction 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 Waterproof Flocked Top 14 gauge vinyl beams 16 gauge vinyl bottom Built-in Battery Pump Comfort Top Construction