FIBER-TECH BEAM CONSTRUCTION - Comprised of thousands of high-strength polyester fibers that provide enhanced comfort, stability and support; Fiber-Tech Beam Construction can withstand more weight and pressure without losing its comfort or stability | DURABILITY - Unlike traditional air beds that tend to sink or dip over time, our 10"" Dura-Beam Air Mattresses are designed with bottom ring stability to withstand the weight of the sleeper without sagging or losing its shape | BUILT-IN AC ELECTRIC PUMP - High-Powered built-in electric pump (110-120V) for hassle-free inflation and deflation; users can easily and quickly set up the air mattress when they need it and then deflate it (Approximate inflation time 2 minutes) | VELVETY SLEEPING SURFACE - The air mattress features a velvety sleeping surface that is not only soft and comfortable, but also easy to clean; this makes it an ideal choice for use as a guest bed or for camping trips | STRETCH - At first inflation the material will STRETCH, which is sometimes misinterpreted as leaking; You will sense a loss of pressure, that's just the bed stretching, simply re-inflate the bed again; the bed will fully settle within 2-3 nights