Made in USA.The RidgeRest SOLite mattress was awarded the American Alpine Institute's Guides' Choice seal in 2011 after extensive field testing. The guides found it to be the "perfect three-season pad for backpackers and climbers who might need to sleep on snow but not in super cold conditions." For decades people have relied on the original RidgeRest mattress to provide the lightest comfort possible, or to boost the warmth and durability of a three-season mattress for winter use. Now, with our patent-pending, aluminized Solar coating, the RidgeRest SOLite offers a 10% boost in warmth with even more durability from surface wear and tear. All of this with no appreciable weight gain makes it perfect for everything from extreme, high-altitude climbing to entry-level backpacking.