Our quick-drying R2® fleece traps heat and breathes freely to keep you warm and comfortable across a wide range of conditions. We make the body of the R2 Jacket from exceptionally warm, directionally knit Polartec® Thermal Pro® fabric, which is superlight, fast wicking, compressible, stretchy and soft. Lightweight R1® panels, with HeiQ® Fresh durable odor control, run along the underside of the upper arms and down the sides of the body to improve fit, mobility and comfort range. The lower arms use cozy R2 fabric, and the softly lined inner collar and kissing-welt zipper garage go easy on the neck and chin. Other details: Sonic/Stitch seam construction on all zippers reduces bulk, raglan seams enhance mobility and comfort, slim zippers close the sleek handwarmer pockets; the pocket bags double as stealthy internal mesh drop-in pockets. Fair Trade Certified™ sewn, which means the people who made it earned a premium for their labor.