How It Fits Relaxed fit with hybrid raglan sleeves, constructed to provide an increased range of motion. Made For Days when the air is crisp and the frost might bite, but Mother Nature continues to call. Embrace the outdoors while keeping your body toasty in this super-soft, midweight baselayer 1/2 zip top. Built In Tech Three-D Fit™, Flat Out Seams™, half zip with storm fly and zipper garage. Warmth indicator: Made From Recycled polyester (84%), Merino wool (11%) and elastane (5%). Measurements 28" body length, 33 1/2" sleeve length for size M Care Instructions "