Insulated Air Mattress
Therm-a-Rest NeoAir XLite NXT
$200, 11.5 oz./330g (size regular short, not including stuff sack or pump sack)
Sizes: four sizes from 20×66 inches/51x168cm to 25×77 inches/64x176cm
Choosing the absolute lightest air mattress you find doesn’t always go well: The hours of sleep lost to discomfort may exceed the weight savings in ounces. Put another way, the personal energy lost through a poor night of sleep may eclipse what you gain from shaving a few ounces of pack weight. The latest iteration of Therm-a-Rest’s ultralight NeoAir XLite air mats, the NXT, will flip that equation to the positive side of the energy ledger for many backpackers, as it did for me on several spring and summer backpacking trips.