New for 2011: 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-dseason 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. Advanced Warmth: Aluminized surface boosts warmth, reflecting heat back to your body. Light & Durable: Virtually indestructible and light enough to carry anywhere. Unique Design: Soft peaks and heat-trapping valleys provide exceptional comfort.   Colour Silver/Sage R-Value 2.8 Weight 14 oz / 400 g Width 20 in / 51 cm Length 72 in / 183 cm Thickness .625 in / 1.5 cm Packaged dimension 20 x 8 in / 51 x 20 cm Foam type Solid Fill material Molded Closed Cell Country of Origin Made in Seattle, USA