Using this can cooler tumbler is easy. You can put your 12 oz canned drinks in it if they're the slim - style, or pour in coffee, tea, or mixed drinks as it has a 16 oz capacity. To keep your tumbler in good condition, remember to only wash it by hand. Don't put it in the dishwasher or use it in the microwave. Thanks to its double - walled vacuum and 304 stainless steel material, it'll keep your drinks cold for 24 hours and hot for 12 hours. Enjoy your personalized tumbler for any occasion!