Fill up on adventure with an over-sized 46oz bottle built with the middle of nowhere in mind. This dawn-to-dusk water well is sized just right. It’s not too big to slow you down, but big enough to hold ample H20 from your early-morning start to that worth-the-hike sunset. As for its temp-holding power, its double-wall vacuum insulation promises subzero sips on the hottest days.