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Klim Aggressor 2.0 Shirt

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 shirt utilizes Thermal Mapping technology with Level 1 fabric in high-heat producing zones and those prone to bunching such as the armpits, collar 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 1013391 3198000120000 Only 2 Left: Ships next business day
Black / MD 1013393 3198000130000 Out of Stock:
Black / LG 1013395 3198000140000 Out of Stock:
Black / XL 1013397 3198000150000 Out of Stock:
Black / 2XL 1013399 3198000160000 Out of Stock:
Black / 3XL 1013401 3198000170000 Out of Stock:
Grey / SM 1013392 3198000120600 Out of Stock:
Grey / MD 1013394 3198000130600 Out of Stock:
Grey / LG 1013396 3198000140600 Out of Stock:
Grey / XL 1013398 3198000150600 Out of Stock:
Grey / 2XL 1013400 3198000160600 Out of Stock:
Grey / 3XL 1013402 3198000170600 Out of Stock: