RTIC 10 oz Tumbler. RTIC Lowballs are stainless steel, double wall vacuum insulated. Keeps your drinks ice cold longer - works great for hot beverages. The RTIC Lowball is perfect for a cup of coffee, whiskey, scotch or your favorite cocktail. The crystal clear lid lets you know exactly how much drink you have. Easy to clean. Golden Silhouette with your pet's name applied with black or white vinyl.