1×1 Rib Knit fabric offers stretch and snug fitFabric Weight: 5.5 ozFiber Content:100% PolypropyleneWicks moisture and dries quicklyCrew NeckSet-in long sleevesRib collar and cuffs help keep the cold outAvailable in Talls and sizes up to 3XStyle #21LSCare Instructions: Machine wash cold with like colors. Use only non-chlorine bleach. Line dry. Do not iron.Rated forCold to VeryCold and HighActivityLayer Rating