When your run calls for warmth, you don???t envision yourself reaching high speeds in a puffer. Instead, as a streamlined solution, Under Armour???s dual-layer works to trap body heat without adding weight, while active aspects ??? moisture-wicking and anti-odor treatments ??? help you stay dry and fresh through intense moments. Here, thumbholes and a half zip front further allow for a smooth, adjustable fit that never gets in the way. Polyester/Elastane?