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 |













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!
Jessica L. (verified buyer)
Perfect for winter hiking! Keeps me warm in freezing temperatures.
Emily R. (verified buyer)
Very comfortable but a bit tight around the waist.
Emily R. (verified buyer)
I love how lightweight and comfortable this set is! Even after wearing it all day, it didn’t feel bulky at all. The breathability helped keep me dry. Absolutely worth it!
Sarah M. (verified buyer)
This set kept me incredibly warm during our outdoor adventure. I never felt restricted, and the softness was a nice bonus. Highly recommend to anyone looking to stay cozy!
Jessica B. (verified buyer)
Durable and super stretchy! I wear this when skiing, and it keeps me warm without any sweat buildup. It’s perfect for layering under my gear. Very pleased!
Linda T. (verified buyer)
Keeps me warm and comfy!
Emma R. (verified buyer)
These thermals have been a lifesaver for my winter hikes. The insulation keeps me toasty while walking in the cold, and they’re so stretchy, I can move easily. Absolutely love how light they are, I don’t even feel them under my clothes!
Emily T. (verified buyer)
This thermal set is a lifesaver during winter walks. It’s so light and I can still layer up without feeling bulky. Plus, the breathability keeps me comfy all day.
Anna R. (verified buyer)
Comfy and warm, great for layering!
Related products
5 Pairs Bamboo Breathable Socks
CAD $54.98Original price was: CAD $54.98.CAD $44.98Current price is: CAD $44.98.Seamless Sports Bra Front Closure Top
CAD $80.00Original price was: CAD $80.00.CAD $39.98Current price is: CAD $39.98.Front Zipper Sports Bra Yoga Top
CAD $44.97Original price was: CAD $44.97.CAD $29.98Current price is: CAD $29.98.Seamless Air Bra 3pcs/pack
CAD $90.00Original price was: CAD $90.00.CAD $44.98Current price is: CAD $44.98.Size guide
Up to 20% OFF Your First Purchase
Decline OfferHave Questions?
Email us : info@ortorex.ca
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.
Privacy Overview
How can we help?
Have a question? We’re happy to help
We’ll get back to you
Please leave your contact details so we can send our response by email.
Thank you!
We’ve received your request.
One of our specialists will get back to you at the email address you provided.