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Are You Supposed to Wear Underwear Under Thermals?

Are You Supposed to Wear Underwear Under Thermals?

When the temperature starts dropping and winter begins to creep in, it is officially time to bring out the thermal underwear! Thermal underwear is essential for getting through the winter, since it helps trap body heat and keep you cozy without being obvious under your regular clothes. Since thermals are meant to be a base layer of warmth, you might be wondering: are you supposed to wear underwear underneath your thermals?

This answer varies depending on the circumstances and who you ask. You’ll find that most people recommend wearing underwear with your thermal underwear, even if that seems contradictory. However, it also comes down to individual preference. Keep reading to answer the question once and for all!

Primary Reasons That People Wear Underwear With Thermals

When it comes down to it, there are two primary reasons that most people recommend wearing underwear with thermals. It may not seem strictly necessary, since thermals are meant to be a base layer and insulate body heat directly. However, there are contributing factors that may influence your decision.


The number one reason that most people prefer to wear undergarments with thermal underwear is for their own comfort. If you feel better and more comfortable wearing underwear, then you should do so! Many people also feel that since thermals cover the entire upper and lower body, it is more appropriate to wear underwear to feel supported.

 Prolonging the Wearability

The second primary reason to consider wearing underwear with thermals is more logic based. In winter, you will be wearing your thermal underwear more frequently due to the consistent cold. With more need to wear it, you’ll want to go as long as possible between washings for convenience. Wearing underwear with your thermal underwear is a good way to ensure you can wear them multiple times in a row without issue.

In The End, It’s Up To You!

While there are certainly reasons to wear undergarments with thermal underwear, it comes down to your own personal preference. If you feel comfortable without them and do not wear them often or mind extra washes, feel free to use thermals as your only base layer! They insulate your body heat and wick away moisture perfectly well either way.

Regardless of undergarments, you’ll find that thermal underwear is the perfect way to stay warm in the winter - you just also need to stay comfortable.

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