DESC: The Classic Series semi-rectangular bags are versatile and comfortable. They offer plenty of room to move around yet they pack small and light, making them perfect for backpacking and car camping. All Classic Series bags are designed to be used with a 20’ wide rectangular pad. The Yampa offers comfort, value and versatility in a very light weight bag. At 1lb 11oz the Yampa packs down to the size of a cantaloupe, but is as comfortable and roomy as your own bed. Rated to 40 degrees .