The Yukon Thermal Pants are a unisex, seamless moisture-wicking base layer built to sit next to the skin under your trousers, pulling sweat away to keep you warm and dry during cold-weather activity. Designed for hikers, skiers, and anyone working hard in low temperatures, they use a body-mapped knit and stretch fibers to move with you without chafing or bunching. The seamless construction removes the rub points that ordinary long johns create, so you can layer them under hiking or ski pants for hours of continuous movement in comfort.
Part of Terra Incognita's outdoor clothing range from a European brand with over 18 years of expedition experience, the Yukon base layer is the foundation piece that decides whether a cold day feels comfortable or clammy. Get the layer against your skin right, and everything above it works better.
Who are the Yukon Thermal Pants for?
The Yukon pants suit hikers, skiers, snowboarders, runners, and anyone active in the cold who needs a warm layer that will not leave them clammy. Because moisture management is the priority, they shine during high-output efforts where you sweat even in freezing air. The unisex fit and wide size range mean the same base layer works for a mixed group, and the slim cut layers easily under most winter trousers.
What are the Yukon Thermal Pants made of?
The pants are knit primarily from polyamide fibers engineered with microchannels that pull moisture away from the skin, blended with 5 percent Lycra for stretch. The seamless construction is central to the design: by eliminating stitched seams it removes the friction points that usually cause chafing on long days. Multi-zone shaping tailors the knit to different areas of the leg for support where you need it and give where you move.
How do the Yukon Thermal Pants compare to cotton?
Cotton long johns soak up sweat and hold it against the skin, which chills you the moment you stop moving. The Yukon does the opposite, wicking moisture outward through its microchannel polyamide so you stay dry and warm. Compared with basic seamed thermals, the seamless build and Lycra stretch also mean far less rubbing and a closer, non-sagging fit under your outer layer.
Specifications
| Characteristic | Sprint S-M | Sprint L-XL | Sprint XXL |
|---|---|---|---|
| Gender Model | Unisex | Unisex | Unisex |
| Size (EU) | 44 - 48 | 48 - 52 | 52 - 56 |
| Size (US) | S-M | L-XL | XXL |
| Height (EU) | 165 - 175 cm | 175 - 185 cm | 185 - 195 cm |
| Height (US) | 5'5" - 5'9" | 5'9" - 6'1" | 6'1" - 6'5" |
| Chest Circumference (EU) | 88 - 100 cm | 96 - 108 cm | 104 - 112 cm |
| Chest Circumference (US) | 34.6" - 39.4" | 37.8" - 42.5" | 40.9" - 44.1" |
| Waist Circumference (EU) | 70 - 88 cm | 82 - 100 cm | 94 - 106 cm |
| Waist Circumference (US) | 27.6" - 34.6" | 32.3" - 39.4" | 37.0" - 41.7" |
| Hip Circumference (EU) | 92 - 104 cm | 100 - 112 cm | 108 - 116 cm |
| Hip Circumference (US) | 36.2" - 40.9" | 39.4" - 44.1" | 42.5" - 45.7" |
| Fabric Composition | 95% Polyamide PA, 5% Lycra | ||
Key features
- Seamless knit removes stitched seams at the thigh and waist, cutting the chafe and hot spots of ordinary base layers
- Polyamide microchannel fibers wick sweat off the skin fast, so you stay dry and warm instead of damp and chilled
- Multi-zone anatomical shaping follows the body's contours for a fit that stays put during high-output activity
- 5 percent Lycra adds four-way stretch for a snug layer that moves with every stride and squat
- Unisex cut with a broad size range suits a wide variety of body types
- Slim, low-bulk profile layers cleanly under hiking, ski, or work trousers without bunching
Who makes it
Terra Incognita has spent more than 18 years running trips and expeditions and manufacturing its own outdoor gear, so this model comes off the brand's own production line rather than a rebadged catalog. The design is tested in the field by the people who guide the trips.
The Yukon Thermal Pants are a unisex, seamless moisture-wicking base layer built to sit next to the skin under your trousers, pulling sweat away to keep you warm and dry during cold-weather activity. Designed for hikers, skiers, and anyone working hard in low temperatures, they use a body-mapped knit and stretch fibers to move with you without chafing or bunching. The seamless construction removes the rub points that ordinary long johns create, so you can layer them under hiking or ski pants for hours of continuous movement in comfort.
Part of Terra Incognita's outdoor clothing range from a European brand with over 18 years of expedition experience, the Yukon base layer is the foundation piece that decides whether a cold day feels comfortable or clammy. Get the layer against your skin right, and everything above it works better.
Who are the Yukon Thermal Pants for?
The Yukon pants suit hikers, skiers, snowboarders, runners, and anyone active in the cold who needs a warm layer that will not leave them clammy. Because moisture management is the priority, they shine during high-output efforts where you sweat even in freezing air. The unisex fit and wide size range mean the same base layer works for a mixed group, and the slim cut layers easily under most winter trousers.
What are the Yukon Thermal Pants made of?
The pants are knit primarily from polyamide fibers engineered with microchannels that pull moisture away from the skin, blended with 5 percent Lycra for stretch. The seamless construction is central to the design: by eliminating stitched seams it removes the friction points that usually cause chafing on long days. Multi-zone shaping tailors the knit to different areas of the leg for support where you need it and give where you move.
How do the Yukon Thermal Pants compare to cotton?
Cotton long johns soak up sweat and hold it against the skin, which chills you the moment you stop moving. The Yukon does the opposite, wicking moisture outward through its microchannel polyamide so you stay dry and warm. Compared with basic seamed thermals, the seamless build and Lycra stretch also mean far less rubbing and a closer, non-sagging fit under your outer layer.
Specifications
| Characteristic | Sprint S-M | Sprint L-XL | Sprint XXL |
|---|---|---|---|
| Gender Model | Unisex | Unisex | Unisex |
| Size (EU) | 44 - 48 | 48 - 52 | 52 - 56 |
| Size (US) | S-M | L-XL | XXL |
| Height (EU) | 165 - 175 cm | 175 - 185 cm | 185 - 195 cm |
| Height (US) | 5'5" - 5'9" | 5'9" - 6'1" | 6'1" - 6'5" |
| Chest Circumference (EU) | 88 - 100 cm | 96 - 108 cm | 104 - 112 cm |
| Chest Circumference (US) | 34.6" - 39.4" | 37.8" - 42.5" | 40.9" - 44.1" |
| Waist Circumference (EU) | 70 - 88 cm | 82 - 100 cm | 94 - 106 cm |
| Waist Circumference (US) | 27.6" - 34.6" | 32.3" - 39.4" | 37.0" - 41.7" |
| Hip Circumference (EU) | 92 - 104 cm | 100 - 112 cm | 108 - 116 cm |
| Hip Circumference (US) | 36.2" - 40.9" | 39.4" - 44.1" | 42.5" - 45.7" |
| Fabric Composition | 95% Polyamide PA, 5% Lycra | ||
Key features
- Seamless knit removes stitched seams at the thigh and waist, cutting the chafe and hot spots of ordinary base layers
- Polyamide microchannel fibers wick sweat off the skin fast, so you stay dry and warm instead of damp and chilled
- Multi-zone anatomical shaping follows the body's contours for a fit that stays put during high-output activity
- 5 percent Lycra adds four-way stretch for a snug layer that moves with every stride and squat
- Unisex cut with a broad size range suits a wide variety of body types
- Slim, low-bulk profile layers cleanly under hiking, ski, or work trousers without bunching
Who makes it
Terra Incognita has spent more than 18 years running trips and expeditions and manufacturing its own outdoor gear, so this model comes off the brand's own production line rather than a rebadged catalog. The design is tested in the field by the people who guide the trips.
Questions & answers
Yukon Thermal Pants FAQ
Are the Yukon thermal pants unisex?
Yes, the Yukon pants have a unisex fit offered across a wide size range, so they suit many body types. The stretchy, body-mapped cut adapts to different shapes, which makes them a practical base layer choice for mixed groups or shared gear.
Do these base layer pants help with sweat?
Yes, moisture control is their core function. The polyamide fibers are knit with microchannels that wick sweat away from the skin, keeping you dry and warm during hard effort. Staying dry is what prevents the chill you feel when damp thermals cool down at rest.
Are the pants stretchy enough for active movement?
Yes, they include 5 percent Lycra for four-way stretch, so they flex with every stride, squat, and stretch. Combined with the seamless build and multi-zone shaping, that stretch gives a snug fit that moves with you rather than restricting or sagging.
Can I wear them under ski or hiking pants?
Yes, the Yukon is a slim, low-bulk base layer meant to sit under outer trousers such as ski or hiking pants. The seamless surface and close fit layer cleanly without bunching, so your outer layer slides on smoothly over the top.
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