Thermarest NeoAir S

The NeoAir mattress represents the world’s most advanced engineering in ultralight comfort. Beyond being the lightest air mattress available, we’ve utilized two patent-pending internal technologies, making it up to three times warmer and far more stable than any other uninsulated air mattress available. And when it comes to space in your pack, you’ll appreciate that it’s no bigger than a one-liter water bottle. Revolutionary by design, the gossamer NeoAir mattress makes comfort one less thing you’ll need to compromise when traveling Fast & Light.