EXPED · PRODUCT RESEARCH
EXPED MegaMat Duo — LW+
Two adults car camping with enough tent floor and cargo space for one shared mattress
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Where it makes sense
MegaMat Duo LW+ is a shared foam-filled mattress for adults who put bed space ahead of compact packing. The near-52-inch width should be drawn inside the real tent layout before purchase: fitting the floor is only part of the question if that leaves no route to the door. Its included top-up pump is useful because self-inflating does not mean the final firmness will suit you without adjustment. The substantial packed cylinder and carrying weight make this a vehicle-oriented choice. The manufacturer verifies its ASTM R-value, but the separate extreme temperature marketing on the page is not used here as an overnight safety promise.
The tradeoff
Large packed volume, shared firmness, and one mattress carrying the sleep needs of both users.
Documented specifications
| Selected size | LW+ |
| ASTM R-value | 8.1 |
| Dimensions | 77.6 × 52 × 4 in |
| Weight | 9 lb 11 oz |
| Packed dimensions | 27.6 × 11.8 in |
| Included pump | Top-Up Pump |
Sources & further reading
EXPED MegaMat Duo specifications ↗EXPED MegaMat Duo ASTM R-value ↗Manufacturer specifications and guidance checked September 2026. Model generations and included accessories can change; confirm the exact version before ordering.
See it in context.
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