YETI Coolers are built to take the rugged abuse that comes with the way we work and play. Unlike ordinary coolers, which are essentially “disposable,” a YETI is made to last.  The walls are two inches thick and filled with premium polyurethane insulation for maximum ice retention. You’ll typically find just ½ inch of insulation in ordinary “disposable” coolers and maybe an inch in the more expensive models. The bottom line is that insulation thickness correlates to ice retention and YETI is second to none!  In the end, the functional purpose of a cooler is to keep the contents cold. By combining thicker walls, added insulation (especially in the lid), and a full-frame gasket, YETI® coolers out-insulate the others!