L4 Proprius Soft Shell Trousers | The North Face

L4 Proprius Soft Shell Trousers

Exceptional range of motion for ski mountaineering missions.

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Standard delivery (Free): 2-4 working days
Express delivery (9,95€): 1-2 working days

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Ideal for high-output ski mountaineering missions, our lightweight and durable L4 Proprius Soft Shell Trousers are made to move with you. Four-way stretch fabric and articulated knees provide exceptional range of motion for climbing and carving. With WindWall™ technology woven in, you'll be protected from howling wind from start to finish. Side zips featuring a stretch-panel gusset and dual-snap ankle closure make it easy to use ski-touring boots. For added durability, there are Keprotec®- reinforced kick patches to deflect crampons. Part of the Summit Series™ collection - the world’s finest alpine equipment.



Reduces wind chill for comfortable, flexible activity.


  • Durable double-weave fabric with four-way stretch
  • Low-profile waistband with integrated adjustable belt
  • Fully functional, two-way zip-fly with snap closure
  • Articulated knees for improved range of motion
  • 10" side-vent zips
  • Secure-zip thigh pocket with beacon loop
  • 8" side zips feature a stretch-panel gusset and dual-snap closure at the ankle, making it easy to use with ski-touring boots
  • Keprotec®-reinforced kick patches for added durabilit

Product Specifications