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Technology · Mitsui / Pertex

Pertex Shield

A fabric-supplier platform used widely by British and European mountain brands, often in very light hiking and emergency shells.

Specifications last verified 2026-09-01Independent documentation

Manufacturer specification

Published figures only — nothing estimated

Owner
Mitsui / Pertex
Membrane type
Polyurethane membrane laminates in several tiers
Construction options
2L, 2.5L, 3L
Waterproof rating
Not publicly specified by manufacturer
Breathability rating
Not publicly specified by manufacturer
Air permeability
Not publicly specified by manufacturer
Typical price segment
Varies by garment.
Weight characteristics
Varies by face fabric and construction rather than by membrane alone.
Durability characteristics
Durability is driven mainly by face-fabric denier and construction.
DWR requirements
Face fabrics carry a durable water repellent finish. Repellency wears off with use and needs reproofing; the membrane itself is unaffected.
PFAS / PFC information
Check the current season's material declaration. Many brands have moved to PFAS-free repellent finishes, and platforms differ by year and by garment.

WaterproofJacket.com assessment

Our editorial analysis, not a manufacturer claim

Main advantages

  • Strong weight-to-protection balance
  • Available in genuinely light packages
  • Cost-effective

Main disadvantages

  • Tier naming makes like-for-like comparison harder
  • Lighter face fabrics need care around packs

Best uses

  • Fast hiking
  • Emergency shells
  • Trail running

Poor uses

  • Abrasive scrambling
  • Heavy expedition use

Care instructions

  • Wash with a technical cleaner, not standard detergent or fabric softener.
  • Reproof the face fabric when water stops beading.
  • Tumble dry warm or press with a cool iron under a cloth if the care label allows, to reactivate the finish.

Sources

Official documentation and standards we relied on