DeFeet Un*D*Shurt Long Sleeve Baselayers are incredibly soft and comfortable.Unique polarity of acrylic draws moisture away rapidlyIncredibly soft and comfortable to the skinFour season versatilityWrinkle, stain and shrink-resistantMicroSupreme high tech acrylic fiber for excellent moisture managementItem SpecificationsColorWhiteGenderMen"sSizeX-LargeSeasonCool WeatherType of MaterialSynthetic