Our stainless steel running hot and cold travel tumbler is engraved with a bold and eye-catching 13.1 design for a great running gift for a half marathoner. The 20 oz. travel tumbler is specially designed to ensure hot beverages stay hot and cold beverages stay cold for extended periods of time, using double-wall vacuum insulation. This all-season travel tumbler is a great running gift for any occasion and useful for commuting, traveling, or when you're on the go.