Your tennis dad will love this 20 oz. stainless steel tennis travel tumbler. The unique tumbler is engraved with a bold "best tennis dad ever" design and features a double-wall vacuum insulated interior that helps to keep both cold and hot drinks at their optimal temperature for longer periods of time. Sure to be a favorite, this is a useful and versatile tennis dad gift for Father's Day or any other special occasion, including saying thank you for all he does at the end of the season.