Marmot makes great sleeping bags that are EN Tested for your convenience. For those of you who may not know what EN testing is, it is a European government test for sleeping bags. Since Marmot sells sleeping bags in Europe it is required for the bags they sell in Europe, but they are kind enough to put this information on all of their bags. This test is the best way, to-date, to measure how a sleeping bag will perform. The first number represents the lowest temperature where a woman will sleep comfortably, the second number represents the lowest temperature where a man will sleep comfortably, and the last number represents the lowest temperature where a woman will still survive in the sleeping bag. Marmot mummy bags have a hood with a draw cord so that you can get nice and snug in your bag with only your mouth and nose sticking out. They also come with a stuff sack to make packing them into your backpack easier.
Personally, I own a Sawtooth. It is EN tested at: 26.1F, 14.5F, -19.1F. When in its stuff sack it weighs 3 pounds 1 ounce, and fits into the bottom compartment of my backpack quite nicely. This bag has 650 Fill Power Down, and a trapezoid shaped foot area for more room with a heater pocket where you can stash heat packets to keep your feet warm. There is also a stash pocket up near the neck area where you can store personal items like eyeglasses, granola bars, watch, flashlight, tissue, or whatever you may need at night. (On a side note, if you have a watch either wear it all night or, if you decide to take it off, put it in the stash pocket and not on the tent floor because on the floor it will freeze and stop working. Not that I would know that from personal stupidity.) This bag is designed so that there are no drafts, there is no irritating Velcro, there is no way for the zipper to slide down in the middle of the night while you’re sleeping, and there is no way for the zipper coils to chill your skin at night. For all of its ingenuity it is a down bag and so is light and compactable and in need of a sleeping pad for extended backpacking trips. After about four nights without a sleeping pad you won’t want to sleep on your side because your hipbones will hurt and you won’t want to sleep on your back because your tailbone will ache. Also, all of your body heat seeps into the ground at night, so you’ll be warmer with a sleeping pad. It is definitely a great investment, and one that I would recommend.
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