The Arc'teryx Proton Heavyweight Hoody - Men's is expertly crafted to meet the demands of breathability, durability, and mobility required by mountain professionals. It features innovative technologies such as 100gsm Coreloft™ insulation and a Fortius™ Air 50 outer fabric, allowing for superior airflow and moisture management in cold environments. Additionally, the inclusion of 60gsm Coreloft™ in the sleeves and a helmet-compatible StormHood™ make for effortless layering and a comfortable fit. Its articulated patterning further enhances movement without any restrictions.

Technical Features
Breathable
Versatile
Warm and comfortable

Construction
Warm, resilient Coreloft™ synthetic insulation provides thermal performance and retains loft
Fortius™ Air 50 nylon plain weave is lightweight, air-permeable, and durable

Cuff & Sleeves Configuration
Elasticated cuffs seal out cold

Hood Configuration
Helmet compatible StormHood™ provides full coverage without impacting visibility
Insulated StormHood™

Patterning
Articulated patterning for unrestricted mobility

Pocket Configuration
Two chest pockets with zippers
Two hand pockets with zippers
Two internal dump pockets

Sustainability
Biocidal Disclosure - This model was treated with an anti-odour biocidal product (Active Ingredient: Silver Nitrate)

Materials
Coreloft™ Continuous 60 - 100% polyester
Coreloft™ Continuous 100 - 100% polyester
Lining: 20D plain weave - 100% Nylon - bluesign Approved Material
Origin of fabric: TAIWAN
Origin of dying: TAIWAN
May release plastic microfibres into the environment when washing