Great product...I've got the Western Mountaineering Bison and an old Camp 7 North Col, and with this bag, my bases are all covered. Beautiful workmanship, compacts to the size of a grapefruit. I've used it in temps. down to mid 40's, still comfortable, but would not want to push it much more. The beauty is the packable size...so small, with an ultralight pad, the difference in a pack is appreciated

Similar Products Used:

W.M Bison, Camp 7 North Col, and several synthethic insulation bags over the years