Prolite 4 regular, 72″ length. 1.5 inch, 4 season self inflating mattress. Weighs 1lb 11oz. Used just a couple of times before suffering marmot damage to the valve and proximity. Also, 1 pin head spot in the center of the shown patched area. Valve has been replaced and the spot patched using a Thermarest patch kit with seam grip over the top. Repair extends an inch beyond pinhole. Used a few times since and holding air. I no longer need it. Asking $40.00 shipped or Estes Park pickup for $30.00. PPFF or Venmo.