10D nylon Made in the USA or Imported A highly-packable sleeping bag for summer backcountry nights The lightest fully-baffled sleeping bag around Lofty down fill delivers high warmth at a low weight Packs small for convenient travel on the AT or PCT Full-length draft tube and top collar keeps out the chill Weighing in at a mere 13 ounces and compressing down to nearly the size of our water bottle, the Flylite Platinum Sleeping Bag goes with us on every backpacking trip. Its featherweight nylon shell and carefully picked half-length copper zipper make it ideal for thru-hiking, and like all Western Mountaineering bags it's been carefully made by hand in San Jose, California.