There's a reason The North Face's Cat's Meow 20 Degree Synthetic Sleeping Bag has been a classic for years: it boasts an unbeatable combination of warmth, durability, light weight, and compressibility, at a price that seems like it should get you maybe two of those things. No wonder it's a favorite of three season backpackers, campers, and mountaineers. Synthetic insulation will never be as light or as packable as down, but what it sacrifices in weight, it more than makes up for in durability and wet weather performance. The North Face used two different kinds of Heatseeker Pro synthetic in the Cat's Meow to achieve the ideal blend of warmth and compressibility, and the bag's mummy design increases warmth while decreasing weight and size. You'll stay comfortable down to 20 degrees even if your bag gets soggy, and a shaped hood, collar, and no snag draft tube seal in warm air while keeping drafts at bay. There are pad loops, too, so you can make sure you don't slip off your sleeping pad in the middle of the night and wake up with a root sticking up your nose, and even an internal pocket to hold stuff or things, if you prefer.