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The CHL Ultra is our warmest thermal pant, designed for men who face winter conditions during low- to moderate-intensity activities, such as alpine skiing, ice fishing, or winter camping. Its stretch fabric and brushed interior provide enveloping warmth and long-lasting comfort, even in extreme cold. With effective breathability and flatlock seams, it manages moisture efficiently while preventing irritation. For those seeking warmth, comfort, and functionality, the CHL Ultra is an essential base layer.
Wondering which base layer to choose to stay dry and comfortable? Find the answers in our blog post!
Technical sheet
Materials
- Thermal underwear for men offering unmatched warmth, perfect for outdoor winter adventures
Measurement
Inseam:
Pants & shorts - Men
Pants & shorts - Men (Size in numbers)
30 | 32 | 33 | 34 | 36 | 38 | 40 | 42 | |
Waist | 76 | 81.5 | 84 | 86.5 | 91.5 | 96.5 | 101.5 | 106.5 |
Hips | 91.5 | 96.5 | 99 | 101.5 | 106.5 | 112 | 117 | 123 |
Inseam | 84 | 84 | 84 | 86.5 | 86.5 | 86.5 | 86.5 | 86.5 |
Pants & shorts - Men (Size in numbers)
Waist
Hips
Inseam
Pants & shorts - Men (Size in letters)
S | M | L | XL | XXL | |
Waist | 76 | 84 | 91.5 | 99 | 106.5 |
Hips | 91.5 | 99 | 106.5 | 114.5 | 122 |
Inseam | 81.5 | 81.5 | 84 | 84 | 84 |
Pants & shorts - Men (Size in letters)
Waist
Hips
Inseam

Size charts refer to body measurements rather than product measurements.

Product measurements may vary between articles.

Please read the product description for more details.
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