Insulates hot or cold liquids without adding bulk. This practically weightless mylar sheath reflects ambient and body heat away from your drink reservoir, to help keep cold liquids colder longer in hot weather—or hot drinks warmer in cold weather.
It not only helps keep your drink at the right temperature, it reduces condensation in your pack...and helps keep the outside of your reservoir clean. Simply put it over your 100 oz. reservoir and slip the entire unit in your pack.
