The perfect lightweight layer for everything from keeping cool and covered on hot days to bundling up against the chill, this FR baselayer works all year long. Flame-resistant and moisture-wicking it packs a punch wherever you wear it. FR Baselayer T-Shirt Product Features : Greater Arm Mobility™ helps extend arm and shoulder range-of-motion so you can move freelyMoisture Movement Technology™ helps wick moisture away from the skin to keep you dry and comfortable Men's Flame-Resistant Baselayer T-Shirt in Khaki, Size: Small by Ariat