Sleeping pad featuring raised V-chambers which create comfortable loft pockets that support the body's pressure points. Sleeping pad reservoirs maximize loft and warmth. Side rails make it easier to stay on the pad through the night. Thickest pad in the Static Series line at 3.5 inches. Slight taper at bottom of pad to trim weight. Rugged 30D polyester fabric is soft and quiet. Inflation is fast and easy, compatible with Rapid Air Pump. R-Value: 6.5.