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Arc'teryx
Proton AR Hoody
Arc'teryx Proton AR Hoody
The Proton AR Hoody is designed to provide warm, air-permeable, self-regulating insulation for versatile and all-round climbing performance. As a mid-layer, the Proton AR Hoody uses materials that provide thermal insulation but an air permeability that prevents moisture accumulation and overheating. As an outer layer, the jacket’s shell material is abrasion-resistant, with a DWR finish to repel light rain and snow, and a hydrophobic synthetic insulation that is quick drying and retains warmth, even when wet. The Proton AR Hoody is the warmest jacket in the Proton range so is ideal for those who feel the cold.
Tech specs
WEIGHT | 425 g / 15 oz |
MATERIALS | Coreloft™ Continuous 65 (65g/m²) / Coreloft™ Continuous 90 (90g/m²) / Fortius™ Air 40 (92% nylon, 8% elastane) |
FIT | Trim fit, Centre back length: 74 cm |
WARMTH | Coreloft™ Continuous Insulation 65g and 90g |
POCKETS | Two insulated hand pockets with zippers / Two chest pockets with zippers |
Features

Arc'teryx Coreloft™ Insulation
A lightweight and highly compressible synthetic insulation. Made of staple fibres in mixed sizes that are crimped to trap air and retain warmth even in humid and wet conditions, allowing it to dry quicker if wet.

Fortius Air 40™
A lightweight stretch woven fabric, carefully engineered to provide optimum balance of rugged abrasion-resistance and reliable air permeability.

Arc'teryx Nu Water Repellent Treatment
A formulation designed to optimise the original DWR treatments on Arc'teryx GORE-TEX®, softshells, and windshells, enhancing their performance.

Made for Movement
No Slip Zip™ front zipper
Dual back flaps on main zipper prevent wind penetration
Insulated hood
Helmet compatible
Articulated elbows
Gusseted underarms
Stretch-knit cuffs
Drop back hem