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Designed for alpine adventurers braving extreme cold, the Arc'teryx Proton Heavyweight Hoodie boasts Coreloft™ insulation and Fortius™ Air 50 face fabric for unparalleled warmth and durability during high-output activities. With its breathable design, this hoody ensures comfort and protection against the harshest conditions, making it an essential companion for challenging alpine pursuits.
Fortius™ Air 50 | Nylon Plain Weave – Lightweight and allows air into the system to move vapor out.
Coreloft™ Continuous 100 Insulation | 100% Polyester – Lightweight insulation that allows air transfer and performs even when wet.
60g Coreloft™ Insulation in Hood
Regular Fit – Arc'teryx's classic fit is cut comfortably throughout the chest, waist, hip, and thigh. It allows freedom of movement, provides shape, and layers comfortably over or under our layers.
Adjustable Helmet-Compatible StormHood™ Hood – Provides warmth and coverage without impacting peripheral vision.
Zippered Hand Pockets
Zippered Chest Pockets – Sized for a radio or notebook.
Two Internal Dump Pockets
Adjustable Hem
Elastic Binding on Cuffs