We tested this mattress from the lowest valley in the United States to the highest peaks in Nepal, and the feedback always came back the same: This is the most comfortable night’s sleep we’ve had on a pad this packable. Combine that with a unique design that uses two separate air chambers—giving you 1.25 inches of insurance against a leak—and you get our new favorite pad. Pump the bottom half to max capacity to lift you off any roots or rocks, and then fine-tune the top half to your preferred level of firmness. Five hundred forty-eight individual air cells provide structure and better support than traditional horizontal or vertical chambers—even for restless sleepers. One tester deliberately inflated just one side (she had the insulated version), and despite sleeping on uneven, frozen terrain, she was still warm and comfy at 16,000 feet in Nepal. Sleep cold? The insulated model amps R-value from 1.5 to 5 for $30 and 4.5 ounces more. And all this comfort still compresses to 4 by 7 inches. Bonus: The valves allow fine-tunable inflation and instant deflation.