Designed To Go Where You Want To Explore, The Gamma Sl Anorak Is The Result Of Years Of Arc’teryx Softshell Experience And Focus On Purity Of Function. The Fortius™ 1.0 Double Weave Is Light, But Strong. It Resists Wind And Water, Breathes, And Offers Four-way Stretch. A Stormhood™ Adds Protection Without Impacting Peripheral Vision, The Articulated Trim Fit Elevates Freedom Of Movement, And The Minimalist Design Gives The Gamma Exceptional Versatility And A Distinctively Clean Aesthetic.