Normally, it doesn't bode well for a bag when our tester reports wearing a jacket to bed. But considering the fact that temps dipped nearly 10 degrees below this synthetic bag's 32-degree rating, and the cold-sleeping tester snoozed soundly all night with the extra layer, this sack earns high marks as an affordable, versatile summer bag. It packs small enough for a light weekend load, but the draft tube, hood, and efficient mummy cut make it plenty warm for cool alpine nights. A two-way full-length zipper allows for good ventilation in mild weather. $120; 3 sizes; 2 lbs. 13 oz. (regular) (800) 953-8375; www.mountainhardwear.com.