Hiking, climbing, or skinning uphill—the Gamma Jacket keeps you moving through rugged terrain. Wind-resistant and water-repellent, it shields from the elements while maintaining max breathability on that final summit push. High-stretch material and articulated patterning make overhead movements a breeze, while durable face fabric stands up to rough scrambles.
What's been updated: Updated with increased recycled content and a FC0 DWR (Durable Water Repellent) treatment that’s free from intentionally added PFAS. Two zippered chest pockets provide added storage, while revised design lines create a more streamlined fit.
Features & Specs
Technical features
- Weather resistant
- Breathable
- Durable
Construction
- Brushed backer adds warmth and soft comfort
- Recycled Wee Burly™ double-weave nylon face fabric for breathable wind resistance
Cuff & Sleeves configuration
- Shaped cuffs with partial elastic provide coverage and seal out drafts
Design & Fit
- Stretchy fabric allows you to move more freely
- Regular fit provides freedom of movement
- Garment Centre Back Length: Size M is 29"/73.5cm - Varies by size
Fabric treatment
- DWR (Durable Water Repellent) finish repels moisture and is PFAS-free
Hem configuration
- Adjustable hem draw cord seals out drafts
Patterning
- Articulated patterning for unrestricted mobility
Pocket configuration
- Two hand pockets with zippers
- Two chest pockets
Sustainability
- Body - bluesign® approved material
- Recycled content
- PFAS (Per- and polyfluoroalkyl substances) Compliant
Zippers & Fly configuration
- No Slip Zip™ front zipper
Size XS, S, M, L, XL, XXL
Weight 395g / 13.9 oz
Fit Regular
Sizing chart
Activity Rock/Boulder/Hike
Model X000010378
Manufacturing facility Pt. Yongjin Javasuka Garment Ii (Hojeon), Indonesia
Fit & Sizing
Fit: Regular
Our 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.
Materials & Care
Materials
- Lining: Warp knit mesh - 100% Polyester
- Body: Fortius DW 2.0 - Woven Double Weave, 186gsm - 88% Nylon, 12% Elastane
- Origin of fabric: CHINA
- Origin of fabric: TAIWAN, CHINA
- Origin of dyeing: CHINA
- Origin of dyeing: TAIWAN, CHINA
- Origin of Manufacture: INDONESIA
- May release plastic microfibres into the environment when washing
Care
- Machine wash gentle low
- Tumble dry permanent press low
- Do not bleach
- Wash dark colours separately
- Do not dry clean
- Do not iron
- Do not use fabric softener
- Double rinse
Arc'teryx Layering Guide
Layers are the instruments of keeping you dry, warm and using your energy efficiently. Put into the right systems, a good sequence of layers provides you with weather protection, moves moisture away from your skin, conserves or dissipates heat, and does this in the least amount of time.