AIREX AR-180RB Premium 72- by 23- by .4-Inch Exercise Mat The mat insulates the body from cold surfaces and reflects body heat, helping to maintain body temperature Air-filled cells act as cushions to prevent bottoming out under the most rigorous exercises Slightly stretchy with a unique nubby texture 90-day warranty Mat measures 72-inches long by 23-inches wide by .4-inches thick; weighs 3 pounds