The arms are also a little longer and make it more suitable for climbing. They’re also more comfortable pulled up your forearm. The elastic cuffs feel much more robust than the Atom SL cuffs. The octa insulation breathes better than the CoreLoft insulation used in the Atom series too. This makes the jacket a little bit warmer overall. The octa insulation is distributed evenly throughout the jacket, including side pannels unlike the fleece side panels found in the Atom series of jackets. Is The Arc’teryx Beta AR Really Worth The Price? Multi-day backpacking trek in Newfoundland on the ECT.
The Proton FL has a few new features making it a little bit warmer and and even more versatile than the Atom SL. The jacket weighs only 320 grams, making it just slightly heavier than the comparable Atom SL jacket. The Proton FL is the answer to 4 season layering. I knew I could expect the same performance from the comparable Proton FL jacket. I know the insulation is crazy breathable and super warm in the endorphin jackets. The new Octa insulation was used in my favourite running jacket, the argus for men and gaea for women. A ratio that down insulation still rules over.Īrc’teryx’ newest fast & light jacket in the Proton series closes that gap. Making small adjustments and creating a more effective warmth to wait ratio. That’s how synthetic insulation was born.Įvery year there’s marginal improvements for synthetic fibre insulation. They needed something that stays warm when wet, dries out fast, and keep its’ warming properties over prolonged abuse. Something that could effectively replace the natural insulator, down.
Many years ago the military demanded a more robust insulation. Hiking in the Canadian Rockies during late fall. I’ve had the opportunity to put my jacket to the test this year from crossing Iceland, to climbing mountains in the rockies, to trekking along the east coast trail. The Proton FL is unlike any other insulation piece in Arx’teryx lineup.
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