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Arcteryx Proton Vest - Men's

Arcteryx Proton Vest - Men's
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When you’re in motion – climbing, hiking, running trails – regulating thermal comfort is essential. Made to balance air flow and insulation, the Proton Vest wraps the core to deliver warmth without overheating.

Softshell durable, the Fortius™ Air 20 outer stretches, and balances moderate wind and weather protection with airflow. Octa® Loft knit insulation provides warmth that resists packing out over time. The chest pocket is sized for a radio, and the trim fit layers easily under a shell.

Men's Trim Fit
Weight: 220 g / 7.8 oz

Technical Features

  • Breathable
  • Air permeable
  • Light wind resistance


  • Fortius™ Air 20 face fabric effectively balances air permeability and weather resistance with lightweight durability
  • Octa® Loft, clean finished, breathable insulation provides thermal protection while maintaining a comfortable micro climate

Design & Fit

  • Trim fit with articulated patterning for mobility and freedom

Pocket Configuration

  • Stretch-woven zippered chest pocket sized for radio
  • Two zippered hand warmer pockets


  • Contains materials that meet the bluesign® criteria


  • Octa® Loft breathable insulation - 100% polyester

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

  • Weight 220 g / 7.8 oz

  • Fit: Fitted, Hip Length, Centre back length: 72 cm / 28.3 in, Slight drop hem

  • Machine wash in cold water.

  • Do not use fabric softener.

  • Tumble dry on low heat.

  • Do not iron.

Part Numbers

Option UPC Store SKU
Black / Medium 686487755048 VES398289222
Black / Large 686487755031 VES397545032