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A hardshell, mechanical-stretch mountaineering and hiking pant - designed for extreme conditions.
The Extreme Expedition program is designed and developed together with our adventurers and polar guides. This durable professional grade gear has been tested to the extreme during arctic expeditions in the North pole and Antarctica. The Extreme Expedition set is currently in use by the Norwegian People`s Aid, trusted by professionals to protect them during challenging rescue missions.
Weight: 900g


Extremely durable Helly Tech® Professional 3L. Nylon mechanical stretch fabric developed for the toughest conditions out there.
20,000gm WP & 20,000gm moisture vapor permeability
Waterproof, Windproof, breathable & fully seam sealed
DWR + hydrophilic lamination, nylon tricot backing. Fabric has a SUN treatment
80 hours color fastness to light.
Developed together with professional explorers to achieve the ultimate expedition pant. hard-shell fit provides maximum protection from the elements.
Inseam length: 84cm
Soft and stretchy 2L nylon bib attached at waist for maximum comfort and active fit. Custom made stretch suspenders with flexible adjustment.
Soft stretchy boot gaiters with elastic rubber gripper and boot clip.
Durable reinforcement fabric at bottom legs and back seat, double fabric construction for maximum strength.
Articulated construction in knees and seat for an extreme active fit. Integrated pockets constructed in lining for removable kneepad protection.
Velcro waist adjustment for optimal individual fit.
Extended front fly YKK® vislon zipper with windproof construction.
Full vislon YKK® 2-way side zippers for easy access.
2 secured YKK® zipped pockets on upper front bib.
Secure YKK® zipped cargo thigh pocket with flap.


  • Windproof
    0: Air permeable
    1-3: Windproof level is not relevant
    4: Slightly windproof - 13-30 CFM Breathable and wind resistance for hiking use
    5: Highly windproof - 2-12 CFM Strong wind resistance for mountaineering
    6: Windproof - the fabric is fully windproof

  • Waterproofness
    Extremely waterproof

    1: Quick dry - The material doesn't have any membrane or DWR treatment
    2: Water repellent (DWR Treated) - The material doesn't have any membrane so it doesn't have any waterproofness but it is treated with DWR for water repellency
    3: Waterproof fabrics - Hybrid apparel made with waterproof fabrics but seams are not taped
    4: Medium waterproofness - Waterproofness range is the Helly Tech Protection range 5000 to < 10000 mmH2O
    5: High waterproofness - Waterproofness range is Helly Tech Performance range 10000 to < 20000 mmH2O
    6: Extreme waterproofness - Waterproofness range is the Helly Tech Professional range +20000 mmH2O

  • Insulation
    Pure shell
  • Breathability
    Highly breathable
    1-3: Breathability level is not relevant
    4: Breathable - Breathability range is the Helly Tech Protection range. 5000 to < 10000 g/sq.m/day
    5: Highly Breathable - Breathability range is the Helly Tech Performance range. 10000 to < 20000 g/sq.m/day
    6: Extremely Breathable - Breathability range is the Helly Tech Professional range . + 20000 g/sq.m/day
  • Weight
    Weight: 900g
    1-3: Lightweight level is not relevant
    4: Lightweight
    5: Very lightweight
    6: Extremely lightweight
  • Durability
    Highly durable
    1-3: Durability level is not relevant
    4: Durable - The material has a good durability to physical wear and wash
    5: Highly durable - Highly durable to physical wear and wash
    6: Heavy-duty durability - Heavy duty with very good durability to physical wear and wash

Use for

  • Camping & Hiking
  • Mountaineering
  • Trekking
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