Mulholland Sportsman's Flask
Whether you're carrying water, soda, or a more potent libation, a Mulholland Sportsman's Flask ($80) will keep it safe for the duration of your outing. Made from polished stainless steel and sporting a 10 oz. capacity, this expensive but classy cylindrical flask is wrapped in soft black or brown leather, with a snapping top cover that holds two stainless steel shot glasses and a filling funnel.