Description
Beat the cold with ease
Don't let the chilly weather ruin your comfort. The Ortorex thermal underwear will efficiently trap your body heat, keeping you warm.
Moisture-wicking
The fabric will draw sweat away from your skin, helping you stay dry and comfortable. This will prevent the risk of catching a cold.


Elastic
Our thermal underwear allows a full range of motion, perfect for any activity. You'll move freely and comfortably without feeling restricted.
Lightweight
You won't even notice you're wearing it.

Size guide

- To measure yourself:
- 1. Stand straight with your arms hanging naturally by your sides.
- 2. Wrap the measuring tape around the fullest part of your chest.
- 3. Start the measuring tape at the highest point of the shoulder and extend it down to the waist.
- 4. Place the measuring tape at the point where the sleeve begins and extend it down to the wrist.
Size | Length | Bust | Sleeve | |||
---|---|---|---|---|---|---|
cm | inch | cm | inch | cm | inch | |
L | 65 | 25.6 | 84 | 33.1 | 58 | 22.8 |
XL | 67 | 26.4 | 88 | 34.6 | 59.5 | 23.4 |
2XL | 69 | 27.2 | 92 | 36.2 | 61 | 24 |
3XL | 70 | 27.6 | 96 | 37.8 | 62.5 | 24.6 |

- 1. Wrap the measuring tape around your waist and the fullest part of your hips.
- 2. Start the measuring tape at the top of the pant line and extend it down to the ankle.
Size | Length | Waist | Hips | |||
---|---|---|---|---|---|---|
cm | inch | cm | inch | cm | inch | |
L | 97 | 38.2 | 78 | 30.7 | 88 | 34.6 |
XL | 99 | 38.9 | 82 | 32.3 | 92 | 36.2 |
2XL | 101 | 39.8 | 86 | 33.9 | 96 | 37.8 |
3XL | 103 | 40.6 | 90 | 35.4 | 100 | 39.4 |
T***r (verified buyer)
S****o (verified buyer)
T****s (verified buyer)
M*****l (verified buyer)
Emma K. (verified buyer)
Comfy, light, and keeps warmth.
John D. (verified buyer)
I wore them during a winter hike and stayed warm. Love how they feel barely there, yet trap heat so well. Best choice I made.
Mike T. (verified buyer)
Surprisingly lightweight but still very warm. Keeps me dry even when I’m active. They’re flexible enough for jogging or lounging around. Awesome durability too!
Sara L. (verified buyer)
These fit snugly without any restriction. Whether I’m skiing or just walking the dog, the warmth and comfort it provides is incredible. Breathability is a bonus.
Tom S. (verified buyer)
These are my go-to when the temperature drops. They’re snug without being restrictive, and moving around feels entirely natural. Plus, the moisture-wicking is a lifesaver on prolonged hikes.
John D. (verified buyer)
This thermal set is terrific. I wore it on a winter camping trip and didn’t feel the cold at all. The flexibility allows for smooth movement, and it’s lightweight enough that it never felt bulky.
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Medical Disclaimer
Individuals' medical conditions vary, and the use of our products is not guaranteed to be 100% effective for everyone.
If you're dealing with clinical disease or chronic pain, please consult with your physician for medical advice regarding your medical condition.
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