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Ascendor AS Pants

trail, travel, and backpacking

Expert reviewed

Topic summary

trail, travel, and backpacking

Key takeaways

  • Matrix™ double weave stretch softshell fabric
  • Integrated webbing belt with buckle closure
  • Articulated knees for unrestricted movement
  • Zipped hand pockets and thigh pocket
  • Gusseted ankle cuff with zipper and drawcord
  • Excellent balance of weather resistance and breathability

Intended uses

  • Alpine climbing
  • Winter hiking
  • Scrambling
  • Mountain trekking

Verification notes

Evidence: expert reviewed. Last verified July 14, 2026.

Catalog photo
Real product photography — no AI-generated or placeholder imagery.

Editorial take

The Rab Ascendor AS Pants are a solid, no-nonsense choice for mountain adventures where you need reliable weather resistance without sacrificing breathability. Constructed from Rab's Matrix softshell fabric, they strike a good balance between stretch, durability, and protection. These aren't fully waterproof, but they'll shed light rain and snow effectively, keeping you comfortable in variable conditions. The articulated cut and integrated belt make for a comfortable, unrestrictive fit, crucial when high-stepping or scrambling on exposed terrain. They're designed to handle the abrasion that comes with rock and ice, making them a good option for scramblers, alpine climbers, and winter hikers who spend extended time above the tree line.

What sets the Ascendor AS apart is their versatility. They're robust enough for true alpine use but breathable enough that you won't overheat on the approach. The internal ankle gusset with a zipper and drawcord allows for easy adjustment over different boot types, from hiking boots to heavier mountaineering footwear, a practical detail often overlooked. The three zippered pockets are well-placed and secure, providing enough storage for essentials without adding bulk. While not the absolute lightest softshell pants on the market, their durability and weather protection earn their weight, especially when conditions are unpredictable.

Compared to lighter hiking pants, these offer significantly more weather resistance and abrasion protection. Against heavier, insulated winter climbing pants, they provide better breathability for higher output activities or milder conditions, often pairing well with a lightweight base layer for added warmth. They represent a strong value for a durable, performance-oriented softshell pant suitable for year-round mountain use, excelling particularly in shoulder seasons and mild winter conditions where a hard shell might be overkill.

Best for

  • Alpine climbing
  • Winter hiking
  • Scrambling
  • Mountain trekking

Not ideal for

  • Not fully waterproof
  • will wet out in heavy rain
  • Slightly heavier than minimalist hiking pants
  • Limited insulation
  • requires layering in cold conditions
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Verified specifications

Country of manufacture
🇬🇧 United Kingdom
Key features
  • Matrix™ double weave stretch softshell fabric
  • Integrated webbing belt with buckle closure
  • Articulated knees for unrestricted movement
  • Zipped hand pockets and thigh pocket
  • Gusseted ankle cuff with zipper and drawcord

Warranty and repair information: contact Rab directly for the most current terms.

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