20 oz Skinny Stainless Steel Double Wall Insulated Tumbler with Splash-proof Lid, Metal Straw, Cleaning Brush, with a Non-slip Silicone Base 
 
The tumbler’s double-wall vacuum insulated thermal design is good for keeping your drinks warm or cold for a longer time, so you can use it in any season. Keeps drinks warm for 6hrs and cold for 12hrs. Our tumblers also come with a push-on Tritan lid that protects against particles from getting inside. This lid also stops major spills. The tumbler is made of 304 stainless steel and is more durable than other ordinary plastic.