The marmot pinnacle is a versitle sleeping bag made in regular, long and womens sizes. The standard fabric is 30-denier nylon/50-denier polyester but you can also get the upgrade to Pertex® Chainlink 30-denier nylon / 50-denier polyester for additional wind and water protection. A few bags are still out their with Gore Dryloft, which weighs slightly more. The baffeling is extinsive with a 6 baffle hood, 11 baffle foot box and strech tricot baffles throughout. Marmot uses 800 fill adult European goose down fill for insulation.