Mountain Equipment Helium 250 Sleeping Bag 34 Degree Down

You'll muster the energy to trek up higher altitudes when there's warmer weather up there that means less layers to pack, and instead of a heavy sleeping bag, you can bring Mountain Equipment's Helium 250 Sleeping Bag. Not only does this pack weigh a pound and a half, it also packs down to the size of a standard water bottle so you can bring extra snacks or even a watermelon and still have an ultralight backpack to trek with.