Experience style with our Forma Professional 11.8-ounce Glass Travel Mugs. These travel mugs have a double-wall design that retains temperature. Made from borosilicate glass, these clear coffee mugs do not break easily. These to go coffee cups are durable and can withstand temperatures from -40F to 300F. For enhanced appeal, these coffee tumblers are designed with hand-blown glass. The included silicone lid on our travel coffee mugs forms a tight seal to avoid spills. To minimize drips and dribbles, the lid of these double wall coffee mugs features a raised spout. These travel coffee cups come with silicone cup sleeves to provide a comfortable grip. The mint green finish of these hot cup sleeves and lids adds a pop of color. Made to be versatile, these glass coffee mugs are microwavable and oven-ready. For easy cleaning, these glass tumblers are dishwashable. These glass cups measure 3.1 inches in diameter by 6.3 inches in height and can hold up to 11.8 ounces. Sold in a 10 count box.