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The Klim Aggressor 2.0 Pants has been discontinued and will not be returning.

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Klim Aggressor 2.0 Pants

Klim’s mid-weight base layer piece is engineered with mechanical fabric construction in main body for aggressive uptake of moisture from the skin and rapid transport to the fabric’s outer surface. The Aggressor 2.0 Pant utilizes Thermal Mapping technology with Level 1 fabric in high-heat producing zones and those prone to bunching such as the crotch and lower back.


  • Mechanical fabric construction accelerates moisture transfer from skin to mid-layers/outerwear
  • Thermal Mapping technology incorporates Level 1 fabric in high heat and mobility zones
  • Smooth surface for bunch-free fit under fleeces and outerwear
  • Low-profile flat-lock seams
  • Enhances breathability and comfort of Klim outerwear systems
  • Available online only, not available in stores
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Product Style Item # Manufacturer Product # Availability
Black / SM 1013403 3200000120000 Out of Stock:
Black / MD 1013405 3200000130000 Out of Stock:
Black / LG 1013407 3200000140000 Out of Stock:
Black / XL 1013409 3200000150000 Out of Stock:
Black / 2XL 1013411 3200000160000 Out of Stock:
Black / 3XL 1013413 3200000170000 Out of Stock:
Grey / SM 1013404 3200000120600 Out of Stock:
Grey / MD 1013406 3200000130600 Out of Stock:
Grey / LG 1013408 3200000140600 Out of Stock:
Grey / XL 1013410 3200000150600 Out of Stock:
Grey / 2XL 1013412 3200000160600 Out of Stock:
Grey / 3XL 1013414 3200000170600 Out of Stock: