Buy the men's or women's version (shown) of this bag, and you'll get serious space–great for XL frames, restless sleepers, and storing extra winter clothes–without extra weight. This staff favorite has a tapered rectangular shape, yet it's rated conservatively. The 15°F bag kept our cold-sleeping gear editor warm when temps dipped below freezing.
Credit plenty of 650-fill down on top and a free-hanging draft yoke that snugs around your neck and seals in body heat without any fussy cords. The company's signature pad sleeve is the only thing on the bottom (hence the weight savings); Big Agnes figures you'd crush the down if they put it there, so your mat provides the only ground insulation. A built-in pillowcase–stuffed with your puffy jacket–makes for a luxurious head rest. The price is a bargain considering the warmth. $190-$220; 2 lbs. 12 oz. (w's petite); each model comes in two sizes; bigagnes.com