The Claim: The Big Agnes Horse Thief SL sleeping bag promises “superlight” weight savings, plus warmth to 35 degrees.
The Trial: I burrowed into the Horse Thief on summer nights in a tent near 10,000 feet, chilly fall outings at lower elevations, and on winter car-camping excursions when frost formed inside the windows.
The Verdict: The medium bag weighs in at 1 pound, 11 ounces. It’s on the hefty end of the scale for pure light and fast expeditions, but if you’re not gunning for speed records, this value-packed bag saves weight and pack space. A Pertex Quantum shell (rip-stop nylon) holds up to heavy use, and it lets you pack the bag smaller than a football. The Horse Thief’s 800-fill goose down delivers three-season warmth. A nylon taffeta lining offers luxurious comfort. And of course, Big Agnes uses their trademark integrated bag and pad system. A sleeve on the underside of the bag—designed for any pad 20 inches wide—keeps you on top of your pad throughout the night. $360–$380; bigagnes.com —Olivia Dwyer