Exped MegaMat Duo Sleeping Pad - 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. Features 4in mattress height comprised of high-quality open-cell polyurethane foam keeps sleeper warm & comfortable, providing ample thickness to keep most campers from "bottoming out." Duo models now feature 30 percent more foam coring to match our single models, allowing for faster deflation, lighter weight and smaller packed size when stowed in the stuff sack. 2 practical welded side handles make for easier handling and carrying ability; no more awkward mat grappling. 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 vertical sidewall construction maximizes available sleep area and reduces tapering at the edges, similar to your own mattress at home. 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.