You have one of the most extensive Boston Celtics gear collections out there, but your vessel for your game day beverage could use some added team spirit. Solve that with this 15oz. Stainless Steel Powder Coated Mug. Its double-walled, insulated design will ensure your favorite beverage is kept as cold or as warm as you need for hours. Using this spirited Boston Celtics accessory to hold your game day beverages will make the game that much more enjoyable.