Seriously Versatile, The Kyanite Is The One You Grab For Climbs, Ski Days, Cold Hikes, And To Cut The Chill When You Roll Out Of Bed. Worn As A Midlayer Or Standalone, It Delivers Warmth, Mobility, And Moisture Management. The Polartec® Power Stretch® Pro Has A Nylon Face For Abrasion Resistance, And Four-way Stretch For Freedom Of Movement. The Streamlined Fit Delivers Unrestricted Comfort And Layers Easily Under A Shell, And A Low-profile Hood Adds Warmth.