Drink in Style with This Large Mason Jar Jug This handy and convenient 20-ounce Mason jar mug makes a great travel mug for cold or warm beverages. Because it is double insulated, you won't have to worry about this mug sweating when you carry cold beverages on warm days. Also the heavy duty lid is made so you never have to worry about leaking. This quaint, vintage-style large mug comes with a tight metal-colored lid, the double walled mug itself, and a straw which fits into the hole provided in the middle of the lid. Use this large Mason jar jug to offer your company a tall, cool glass of lemonade or an extra large, extra frosty Margarita on a hot summer day. Fill it with old-fashioned soda flavors like root beer, cream or sarsaparilla soda or enjoy a big mug of sweet tea in one of these super insulated mugs made to keep your beverages cold or warm if that's your pleasure. Color: Blue.