These Beautifully colored stainless steel tumblers have double walled insulation to keep your drinks hot or cold for up to 24 hours. I love mine, I fill it up with ice and drinks and after doing a show out in 100 degree temperatures for 8 hours I still have ice in my glass and bottle.The tumblers are sweat free and fit into most beverage holders. Available in 20 and 30 ounce sizes. Perfect for that cup of tea, coffee or soda. These beautiful travel mugs can be engraved for a personal touch with any combination of text, logo or graphics. Send your text/art to firstname.lastname@example.org for your personalization of any of the sizes or colors.