CamelBak Stoaway Hydration Reservoir - $49.95

It may be the worst thing that has ever happened. You just hiked five miles up the side of a mountain in the freezing, pre-dawn hours to enjoy the fresh powder. You reach for a drink to relieve your thirst only to find that the refreshing liquid has turned into ice. The Camelbak Stoaway Hydration Reservoir insulates your drink so you can rehydrate even when the mercury drops. - $49.95