Intex Super Tough Twin Air Mattress with Foot Pump Product Features Fiber-Tech Construction - Engineered with the Fiber-Tech Construction, which is comprised of thousands of high-strength polyester fibers, resulting in amazing durability for years of lasting comfort. Unlike traditional airbed construction, high-strength polyester fibers do not stretch over time. Super-Tough laminated exterior - The smooth, puncture resistant surface and inner construction eliminates bumps for a refreshing nights sleep.