Can You Microwave A Starbucks Tumbler?

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*This post may contain affiliate links. Please see my disclosure to learn more. Looking for a commodious way to keep your chocolate hot all day long ? If you enjoy sipping extra hot beverages, then a Starbucks tumbler may be the right isolate cup for you, but is it safe to microwave a Starbucks tumbler to quickly heat up your drink ?

Starbuck tumblers are the perfect travel mugs for both hot and cold beverages that can be used time and fourth dimension again. If you want to keep your beverage extra hot, by rights microwave Starbucks cups with these quick reheat solutions !
Tumblers are often made from plastic or metal, which can pose problematic when heated within a microwave oven. Furthermore, the double wall insulation may not fully function in certain temperatures and overheating can damage the blanket layer. 

The air opening between double-wall void insulating material layers helps to maintain temperature for extend periods of fourth dimension. As a result, an isolate layer can function to keep a cold drink cold, or a hot drink hot .
The best function about Starbucks tumblers is that you qualify for recurring discounts. You can bring your tumbler into Starbuck for a $ 0.10 honor on any beverage, or fill up the cup with chocolate for good $ 2 !

now that your coffee got cooled from sitting about, it ’ randomness time to reheat coffee bean in the microwave. But before identifying the safety of microwaving Starbucks tumblers, it ’ south best to learn more about the features and functions .

What is the difference between a cup and a tumbler?

When it comes to on the fit transportation with your darling beverages, there is net dispute between a cup and a roller. Both reclaimable vessels are designed to hold liquid and can come with a eyelid to help avert spills, but a net physical eminence does exist between the two .
In general, a cup has a handle while a tumbler is a drinking glass with straight sides and no handle or stem. 

How does an insulated tumbler work?

hotness radiates through mediums like melted, solid and gas. Heat cursorily adjusts to the ambient temperature of its surroundings.

If you open the door of a hot oven, heat escapes quickly and drastically cools the inside of an hot. If you leave a glass of ice water system outside on a hot day, the internal-combustion engine melts and condensation forms around the external of the cup .
However, if there is an insulation between outer layer of the tumbler and the inner cup liner; therefore it will maintain the temperature of the beverage a bit longer.

There are two types of isolate tumblers, one that uses insulating material material and the other is vacuum sealed with an air break. It is fairly coarse to see a level of water used in between the double over walls of an isolate tumbler.

The insulating material layers reduce the sum of compression formed outside of the cup alternatively of on the inside of the insulation layer. As a consequence, the double walled insulating material helps to keep the hot drinks hot and cold drinks cold .

Can you put hot coffee in a Starbucks tumbler?

Hot beverages should only be served in glassware specifically designed for heat liquids. Before you pour hot chocolate into a Starbucks tumbler, it ’ randomness important to determine what the drink field glass is made of .
Technically, you may put hot coffee into a Starbucks tumbler if it is made with stainless steel. I would not recommend serving hot drinks inside an acrylic tumbler because it could melt and potentially leach chemicals into the refreshment. 
Check the bottom of the looking glass and besides the eyelid for extra recommendations before serving hot or cold beverages .

Are Starbucks tumblers microwave safe?

There are two types of tumblers from Starbucks, so it ’ second important tot distinguish the deviation :

  • The stainless steel tumbler is vacuum insulated to keep both hot and cold beverage at their initial temperature for up to 4 hours.
  • The clear vent tumbler is an acrylic cup with straw. It may have insulated double wall or single wall, however it is designed to keep cold drinks cold. 

Neither Starbucks roller is microwave safe. The acrylic fiber tumbler is good for ice drinks, but the stainless steel steel tumbler is designed for both hot and cold .
It is not recommended to microwave any container with double walled insulation. The insulation material may expand from the heat, and potentially explode due to intense pressure.

In general, no tumblers are going to be microwave safe since they all have some form of insulation built in that would get destroyed by sudden heat increase .

Things to know before microwaving Starbucks tumbler

The main aim to use Starbuck roller is to maintain the temperature of your drink in, whether that is coldness or blistering. unfortunately, it alone keeps a beverage hot for about an hour, and halfhearted for few hours after that.

There are pair of things you need to know before microwaving Starbucks tumbler to reheat a drink .
In order to maintain the temperature of your darling beverage for an exsert timeframe, here are a few recommendations for you to follow :

  • If you have single walled tumbler, check the bottom to see if it is labeled microwave safe.
  • Instead of using a Starbucks tumbler, go with microwave-safe Tervis plastic tumblers
  • Do not overfill the tumbler. Leave at least a one inch gap from the top lip.
  • Make sure to microwave without the lid 
  • Heat in 30 seconds length of time.
  • Stir and check the temperature.

Double walled cups and alloy materials are not safe to use in the microwave. Unless the Starbucks tumbler is intelligibly labeled as microwave safe, assume that it is not !


Starbucks tumblers are a great appliance to maintain your hot and cold beverages at their desire temperature. deplorably, they are not typically designed to be used in the microwave.

How erstwhile the tumbler is, how the roller is used, and how the roller is cleaned can ultimately affect its functionality. Utilize these tips to care for your Starbucks tumbler so that you can enjoy your reclaimable roller everyday.

Best manner to reheat a beverage in the microwave :

  • Transfer the drink to a microwave-safe mug.
  • Reheat in the microwave using 30 seconds intervals.
  • Stir beverage between each duration.
  • Check to find your desired temperature.

Tumblers are perfect for both hot and cold drinks. They help to keep the drink at its original temperature for longer periods of time, but Starbucks tumblers are not designed for use in the microwave .
If you have had success using a Starbucks tumbler in the microwave, then no harm no filthy. however, you should be mindful of the possible hazards and possibly transfer the beverage to a microwave safe cup moving advancing.

In summation to the implicit in risks associated with microwaving plastic and microwaving metal, you should besides be aware of the potential danger of overheating an insulate cup. a long as the roller is not doubling wall and contains no metallic decoration. it should be very well to microwave .
Is Starbucks tumbler microwave safe?