Proton FL Hoody Mens Black
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Proton FL Hoody Mens Black

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Product Details
Environmentally friendly, ultra-light, and exceptionally warm, the Proton FL men's Hoody is the perfect additional layer for cold days out. This hoody utilises a durable Fortius™ Air 20 face fabric that balances air permeability with light wind resistance together with an Octa® Loft knit insulation for unbeatable levels of warmth. Designed with a trim fit, the articulated patterning enhances mobility, while the adjustable, insulated hood provides additional weather protection. With an excellent warmth-to-weight ratio, this hoody is finished with a stretch-woven chest pocket and zippered handwarmer pockets. Super- simple and stylish, Arc'teryx's branded logo adds an adventurous, modern touch to every outfit.
  • Weight: M: 343g
  • Fit: Trim
  • Durable Fortius™ Air 20 face fabric balances air permeability with light wind resistance
  • *Octa® Loft knit insulation provides breathable warmth, resists packing out
  • Adjustable, insulated hood provides additional warmth and fits under helmet
  • *Stretch-woven zippered chest pocket sized for radio
  • Zippered hand warmer pockets
  • Trim fit with articulated patterning for mobility and freedom
  • Fabrics: Fortius Air 20, Improved Octa Loft
  • Sustainability: Self: Blue sign Approved Material
Delivery & Returns

UK Standard Delivery

  • UK Standard Delivery is Free for orders over £30
  • UK Standard Delivery is £1.99 for orders under £30

UK Next Day Delivery

  • The cost of Next Day Delivery is £4.99
  • If you order by 2pm, you will receive your order the next working day
  • If you order anytime at the weekend, you will receive your goods on the following Tuesday.
  • Next Day Delivery is not available to the following: Ireland and the Scottish Highlands

UK Returns

  • Free UK returns within 30 days of purchase

Stock Alert

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Size Guide



Chest 36” 38” 40” 43” 46” 49” 52”
Waist 28” 30” 32” 34” 36” 38” 40”

Chest sizing varies widely depending on the garment, brand or range. Instead we have outlined below a few of the main types of fit found in our ranges and how they compare.


Waist 28” 30” 32” 34” 36” 38”
Leg Length Short Regular Long
  30” 32” 34”