After staying perfectly toasty on a windy Colorado night with lows in the teens, one female tester said she'd take this 800-fill down heater another 10 degrees colder.
That extra warmth, plus the highly breathable and water-resistant Pertex Endurance shell, makes the Rhone a good value for the weight and price. Size it before you buy: The one unisex model works perfectly for six-footers and even tall women, but it's excessively roomy for hikers shorter than 5'6." $350; 2 lbs. 11 oz.; 15°F