Description
Stay warm on chilly days
The Ortorex thermal underwear provides excellent thermal insulation. It‘ll trap your body heat close to the skin, keeping you warm.
Non-restrictive
The used materials are known for high elasticity. You'll move freely and comfortably without feeling restricted.


Breathable
Our thermal underwear helps to regulate body temperature by wicking away moisture. This will prevent sweat build-up and the risk of catching a cold.
Lightweight
You won’t feel bulky wearing warm clothes over this underwear.

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 | |
M | 57 | 22.4 | 72 | 28.3 | 53 | 20.9 |
L | 59 | 23.2 | 76 | 29.9 | 54 | 21.3 |
XL | 61 | 24 | 80 | 31.5 | 55 | 21.7 |
2XL | 63 | 24.8 | 84 | 33.1 | 56 | 22 |
3XL | 65 | 25.6 | 88 | 34.6 | 57 | 22.4 |

- 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 | BUST | SLEEVE | |||
---|---|---|---|---|---|---|
cm | inch | cm | inch | cm | inch | |
M | 87 | 34.3 | 60 | 23.6 | 74 | 29.1 |
L | 89 | 35 | 64 | 25.2 | 78 | 30.7 |
XL | 91 | 35.8 | 68 | 26.8 | 82 | 32.3 |
2XL | 93 | 36.6 | 72 | 28.3 | 86 | 33.9 |
3XL | 95 | 37.4 | 76 | 29.9 | 90 | 35.4 |
Lisa M. (verified buyer)
Warm, comfy, and perfect fit. I wear it daily!
Rebecca W. (verified buyer)
This thermal set has been a lifesaver during the chilly months! The fabric is soft against my skin, and it layers seamlessly under my clothes. I’ve noticed that I don’t need as many layers when going out, which is fantastic. Highly recommend for anyone who struggles with staying warm during winter!
Samantha T. (verified buyer)
Great warmth, but sizes run a little small.
Olivia M. (verified buyer)
Keeps me warm, but sleeves are a bit short.
Emily T. (verified buyer)
Perfect thermal set for keeping warm in winter. Soft, stretchy fabric feels comfortable against the skin. Washed several times without any issues. Have recommended it to friends and ordering more for the family!
Liam S. (verified buyer)
Excellent quality, very warm!
Alice (verified buyer)
Incredibly warm, soft, and comfortable. Perfect for cold winter days. I can wear them all day and they fit perfectly under my clothes without being bulky. The material feels high quality and washes well. Highly recommend for anyone looking to stay cozy!
Sophia (verified buyer)
Incredibly warm and comfortable. Keeps heat in super well!
Olivia (verified buyer)
Great quality! Stays soft, warm, and fits perfectly even after washing.
Ava (verified buyer)
Highly satisfied! Durable, comfy, and stylish for layering.