Fabric details:
The performance and longevity comes from premium grade fabric. The main tent body is made from a 10.1 oz, 100% cotton, Army duck canvas. You might be asking, where is the rainfly? It doesn't need one. This is an extremely water resistant fabric that remaining cool and comfortable in hot humid conditions. It will not wick if touched when raining and is very good at keeping desert dust out making it popular at events like Burning Man.
A 100% cotton fabric is nearly unaffected by sun exposure and will outlast most synthetic fabrics many times over. They provide excellent tear-resistance and long-term durability. When other synthetic fabric expedition tents were getting shredded on a National Geographic Mt. Everest climb at their 21,000' basecamp, it was a cotton canvas tent survived 40 days of pounding without a problem.
For the technically inclined, the fabric is a Sunforger boat-shrunk marine-finish duck. This canvas is a double-fill material made up of two yarns twisted together in a durable "one-up, one-down" construction. It has over 100 tough little double-fill threads per square inch, resulting in a very tight uniform weave that is naturally water resistant. For extra insurance against water intrusion, the canvas is double-dipped in a Sunforger silicone treatment. You can't feel this treatment, it's integral to the fabric — not simply applied to the surface. This "dry-finish" treatment is extremely durable, lasting up to decades. It also makes the canvas mildew resistant.