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Arcteryx Proton LT Jacket - Men's - FW21

Arcteryx Proton LT Jacket - Men's
  • Color: Microchip
  • Color: Microchip
  • Color: Microchip
  • Color: Microchip
  • Color: Microchip
  • Color: Black
Please select options


The Proton LT Jacket is equipped with a breathable insulation package to manage the dynamic needs of mountain pursuits and perform as a self-regulating mid layer for a variety of high output activities. Breathable insulation means excess heat and moisture can pass through the combination of air permeable fabrics and insulation. In addition to being extremely air permeable, the Fortius™ Air 20 face fabric has unrivaled hardwearing durability, over 60 times more durable in abrasion tests than the industry standard. Coreloft™ Compact 80 synthetic insulation maintains excellent stretch recovery. The No Slip Zip™ keeps the main zipper from self-opening. Put it on, leave it on and stay focused on the activity.

Men's Trim Fit.
Weight: 340 g / 12 oz

Technical Features

  • Wind resistant
  • Water resistant
  • Abrasion resistant
  • Air permeable


  • Air permeable Coreloft™ Compact 80 insulation regulates a comfortable micro climate
  • Fortius™ Air 20 face fabric effectively balances air permeability and weather resistance with lightweight durability

Design & Fit

  • Trim fit for athletic performance


  • Articulated elbows
  • Gusseted underarms for mobility and comfort

Zippers & Fly Configuration

  • No Slip Zip™ front zipper
  • Dual back flaps on main zipper prevent wind penetration

Cuff & Sleeves Configuration

  • Stretch-knit cuffs

Hem Configuration

  • Drop back hem
  • Dual lower hem adjusters

Pocket Configuration

  • Chest pocket with zip
  • Two insulated hand pockets with zippers

Fabric Treatment

  • DWR (Durable Water Repellent) finish repels moisture


  • Fortius™ Air 20 - 84% nylon, 16% elastane

  • Coreloft™ Compact 80 - 100% polyester

  • Dope Permeair™ 20 - 100% nylon

  • Weight: 340 g / 12 oz

Part Numbers

Option UPC Store SKU
Microchip / Small 686487600300 JAC476077251
Microchip / Medium 686487600294 JAC473312391
Microchip / Large 686487600287 JAC475316251
Microchip / X-Large 686487600317 JAC477059111
Black / Small 686487385184 JAC434563881
Black / Medium 686487385177 JAC435176871