Stay Warm Using Your Own Body Heat With the Best Thermal Underwear

First up, we have the Thermajohn Thermal Underwear for men. Branded as Ultra Soft, it’s designed to be extra comfortable. The 92% polyester and 8% spandex material composition gives it superb flexibility and stretchability. You can conveniently move around without worrying about ripping it or feeling restricted. It comes in black, hunter green, charcoal, grey, white, and navy, so you have lots of colors to choose from. 

The elastic waistband adds comfort and ensures a secure fit for men of all sizes. You don’t have to deal with buttons or zippers — just slip them on under your clothes, and you’re ready to go! With great moisture-wicking and odor control capabilities, these certainly deserve the top spot on this list.

Here’s another set of thermal underwear, courtesy of Thermajane. Designed for female wearers, this thermal underwear stands out from the crowd for its extraordinary softness. It’s one of the softest, smoothest and most comfortable sets of thermal underwear you could ever hope to wear, made from a great blend of polyester and spandex for comfort and elasticity. Available in over 10 different colors, this thermal underwear set is also fully machine washable and has clever moisture-wicking features to soak up sweat and prevent you from feeling sticky or sweaty after wearing the underwear for a while when you’re out and about.

Next up, we have the Rockey Thermal Underwear. If fighting the cold weather is your primary reason for getting some thermal wear, this one’s a promising choice. That’s because it has lots of positive feedback about how the fleece-lined fabric keeps them warm and comfy all day, whether indoors or outdoors. Thanks to its breathability and moisture-wicking capabilities, you don’t have to deal with that sweaty, clammy feeling.

The elastic seams also eliminate those awkward adjustments as the fabric never falls down or bunches up. Since they’re machine washable, you can freely throw them into your laundry after a long day of sweating. It’s available in many different colors and designs, so you can easily find something that matches your vibe!

At number three, we have the HEROBIKER Thermal Underwear, which stands out with a super affordable price tag! You get really good value for your money with a composition of 10% spandex and 90% ultra-soft polyester. As you’d expect from those materials, the lining feels silky soft on your skin and keeps you toasty even in very rough weather. It does a great job at checking the most important boxes like excellent moisture-wicking, tons of flexibility, all-day comfort, and lasting durability.

We love that despite being so breathable and lightweight, the thermal capabilities aren’t compromised, making this product a perfect fit for high-mobility activities like skiing. Its four-way stretch is specifically designed for maximum freedom of movement to ensure it doesn’t restrict you from any physical activity throughout the day. 

If you’re after long-lasting quality, premium comfort, and cozy warmth — the WEERTI Thermal Underwear won’t disappoint you. It’s one of the best-performing products on some of the biggest online marketplaces, and people seem to love it. Everything about the design is optimized for convenience. For instance, it’s tagless to prevent those uncomfortable itches, has an elastic band for an easy fit-for-all approach, and even has a fly/pee-hole. It also features the brand’s Smart Scent Technology to keep odors away even when you’re out skiing all day!

It’s a squat-proof design with a four-way stretchability paired with a wool lining for top-notch breathability. The material composition is 92% soft polyester and 8% spandex with a fleece lining. The brand recommends ordering a size larger than the one you normally wear for an optimal fit and comfort. It’s available in black, charcoal, navy, and white — which isn’t the most diverse pallet but covers all the major shades.

Lastly, we have the TSLA Thermal Underwear. It offers countless color options to choose from, so if you’re someone who likes to match your thermal underwear with your outfit perfectly — this collection is worth a look! It features a unique mix of elastane fabric and polyester. You get lots of mobility and great moisture-wicking. In fact, it’s so comfy that it even doubles up as sleepwear!

With a four-way stretch design, you can conveniently move around and even squat in them without worrying about embarrassing rips in the fabric. But, just like the Weerti thermal underwear, it’s advisable to go for a slightly larger size with this one for the perfect fit.