This portable seat cushion contains Retain heat retention technology that captures and returns 90 percent of your body heat back to you, to provide all-day seating comfort and warmth. The HotAz seat has additional dual-foam layers to provide extra padding and reduce seating pressure when used on uneven surfaces, tree stumps, metal seats or bleachers, and cold, wet ground.The durable, lightweight, compact cushion has a convenient carry handle and hanging loop to use in the stand, blind, or hang from the tree.