These 100% stainless steel coffee mugs are the perfect choice for using indoors or out. The double-walled construction keeps the contents hot or cold and keeps your hands comfortable. Holds 14 oz, so you can have a big cup of coffee or a full beer. <br>We choose stainless steel for our coffee mugs over ceramic or plastic for several reasons. Stainless steel doesn't leech chemicals into your drinks, no matter how hot they are. This makes them the healthiest choice for you and your family. They are also very durable since they won't break when accidentally dropped or bumped against the counter. This means you'll be able to use them for years to come. Stainless steel won't rust, so your coffee mugs will remain beautiful for years. These coffee mugs are truly great long term investments in your health and happiness.