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If you’re like us and look forward to colder, quieter winter camping nights in the backcountry, you know sleeping warm is the key to making sure your adventures are fun (and safe). But the cost of cold weather sleeping bags is often high. Not so with the Kelty Cosmic 0°F, which is normally a steal at $260. At 35 percent off, it’s just $168 at REI right now—one of the lowest prices we’ve ever seen for a quality zero-degree bag. At 4 lbs, 1 oz, it’s definitely not the lightest zero degree bag out there, but its 600-fill down is water resistant-treated, adding a little more assurance that this bag will keep you warm on the coldest of nights.