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)
John D. (verified buyer)
These thermals keep me toasty even in the coldest weather. The breathability is great. I can move around without feeling weighed down by heavy layers!
Emily G. (verified buyer)
They’re super cozy and lightweight. I wear them under my clothes during winter walks. They keep me warm and dry on chilly mornings.
Mike P. (verified buyer)
Warm and comfy, fits well.
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!
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.
Emma K. (verified buyer)
Comfy, light, and keeps warmth.