Free UK Shipping Over £80 | 30 Days returns Policy | Most Trusted Since 1983

ArcTeryx Proton LT Jacket (Nautic Grey)

3   |  
Size Guide
ArcTeryx Mens Jackets Size Chart

The ArcTeryx Proton LT Jacket is a midweight air-permeable insulation jacket that self-regulates to prevent overheating. | LT: Lightweight.

Worn as a softshell or midweight insulated midlayer, the highly air permeable Proton LT Jacket is adaptable, versatile and designed to manage the dynamic demands of rock, ice and alpine climbing. Advanced material technologies balance wind, weather and thermal protection while allowing air to pass freely in and out. This ability to self-regulate helps prevent vapour accumulation and allows the proton LT to deliver comfort over a wide range of temperatures, conditions and output levels.


  • Abrasion resistant
  • Wind resistant, water resistant
  • Air permeable
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Trim fit for athletic performance
  • Articulated elbows
  • Gusseted underarms
  • Collar height provides coverage when worn without a hardshell
  • No Slip Zip front zipper
  • Dual Back flaps on main zipper prevent win penetration
  • Stretch_knit cuffs
  • Drop back hem
  • Dual lower hem adjusters
  • Chest pocket with zip
  • Two insulated hand pockets with zipper


  • Age Group: Adult
  • Closure: YKK Full Zip
  • Hood: No
  • Inner Fabric: Fortius Air 40 92% nylo, 8% elastane
  • Insulation:L Coreloft Continuous 65 (65g/m²)
  • Windproof: Yes
  • Colour: Grey
  • Gender: Male
  • Manufacture: Arc'Teryx
  • Weight: 355g (L)

Customer Reviews

Based on 3 reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Write a Review Ask a Question
  • Reviews (3)
  • Questions (0)

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!
Dl B.
United Kingdom

Good stuff in winter

It is good jacket n accompany in winter time. U can wear it for both of work and leisure time. . Water and wind resistance.

Brenton B.
United Kingdom

Easy Order, Fast Delivery

Great price even compared to sale prices of retail stores. Placing of order was easy and delivery fast in good condition

Robert S.
United Kingdom

Lightweight, well made, warm for the weight but also good in mixed conditions

It's a well-made, light, versatile bit of kit, that kept me warm while standing around on a snowy sub-zero day but didn't overheat me (too badly) while I was slogging uphill on or between pitches. Versatile enough that I wasn't (significantly) too hot or too cold at any point, although you need a shell when things get really blowy. Overall a great bit of kit.


Don't Miss The Next Big Deal!