Just because it's not frigid doesn't mean you want to be schlepping around a low tech sleeping bag. Crux doesn't do low tech, and the Torpedo 350 41 Degree Down Sleeping Bag is a seriously light, dry, and versatile bag for all your summer and low altitude adventures. The Torpedo doesn't feel like much, at well under three pounds, but the ethically sourced EU 850 Polish goose down is incredibly warm for its weight the 850 European rating is actually closer to 925 in the American system and the draft tube, adjustable neck baffle, and chest covering v tube add plenty of warmth and comfort. If you prefer to sleep under the stars, the Torpedo's 2L eVent membrane is right up your alley. It'll keep water from sneaking into your bag and turning all that down into a soggy mess, and it breathes well to make sure you don't wake up sweaty on warmer summer nights. The nylon shell is incredibly tough for its weight, while the Pertex Quantum lining feels great against skin and prevents down plumes from poking you or escaping in the middle of the night. Cruz also includes a cotton storage sack and a roll top stuff sack to keep your bag safe, because you can't, unfortunately, spend all your time sleeping.