Layering up for winter runs usually means peeling off gear mile after mile. We solved that problem by reinventing this knit at the microscopic level, so it not only keeps you warm but stays light and breathable all run long. High performance yarns with zero-waste construction provide breathable warmth without the weight Body-mapped knit construction for insanely fast dry times Ribbed cuffs & bottom band for added comfort Style #: 1354394 Reflective details 100% Polyester Imported Fitted: Streamlined fit that’s not too tight or too loose. Wash inside out Machine wash cold on gentle cycle with like colors Do not bleach Reshape & dry flat Cool iron with cover if needed Do not dry clean.