FIRM a SOFT a PLUSH a LUXURY Mega in size, comfort and warmth, MegaMat is the ultimate sleeping mat for campers and overlanders who want a premium, reliable, best-in-class sleep experience. With 4 inches of cored foam, MegaMat provides a soft sleep surface ideal for side sleepers. Dial in your exact firmness further by using the included Top-Up Pump to add more air or by opening the valve to purge excess air. PRO TIP: It may sound counterintuitive, but if you find that your camping mat is just a little too hard, use the inflate valve to purge excess air. By opening the valve and pressing gently on the one-way flapper, you can release controlled bursts of air to reach the exact firmness you want. If you open the extra-large deflate valve, you may find yourself losing more air than you anticipated and need to top off your mat againFeatures 4" mattress height 4" mattress height comprised of high-quality open-cell polyurethane foam keeps sleeper warm & comfortable, providing ample thickness to keep most campers from "bottoming out." Air-core-channeled foam insulation Air channels cored out of the foam allow your mat to take in air during self-inflation and purge air again for convenient storage & transport and reduced weight. Welded side handle A practical welded side handle makes for easier handling and carrying ability; no more awkward mat grappling. Soft, recycled material No one wants a rough or scratchy mattress; the soft, 100% recycled 4-way stretch tricot polyester surface material cradles the body & provides next-to-skin comfort. 3D construction 3D vertical sidewall construction maximizes available sleep area & reduces tapering at the edges, similar to your own mattress at home. Customizable comfort Top off with additional air for a more firm sleep surface, or gently press on the one-way inflate flapper to release excess air for a more soft sleep surface.R-Value 8.1 Temperature -40 AdegF Dimensions MW: 72 in x 25.6 x 4 in LW: 77.6 x 25.6 x 4 in LXW: 77.6 in x 30.3 x 4 in Weight MW: 73 oz | 4 lbs 9 oz LW: 80.2 oz | 5 lbs LXW: 91.7 oz | 5 lbs 12 oz Packed Dimensions MW: 26.5 x 7.9 in LW: 26.4 x 8.7 in LXW: 31.1 x 9.8 in Pump Style Self inflation/Top-Up Pump Includes Sleeping mat, Top-Up Pump, temporary repair kit, SideWinder stuff sack