Exped MegaMat 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." 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. A practical welded side handle makes 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 & 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.