Boy's AllSeasonGear? Reversible Longsleeve Top. Light side of UA AllSeasonGear? is to be worn on body to keep you cool. Dark, textured side of UA AllSeasonGear? fabric is to be worn on body to keep you warm and dry through superior moisture transport and evaporative cooling. Armour?Stretch improves mobility and accelerates dry time with lightweight fabrics built in a 4-way stretch. Built with Flatlock Seams that feel smooth against the skin and prevent chafing. Anti-Odor Technology prevents the growth of odor causing microbes. 30+ UPF protects your skin from the sun's harmful rays and inhibits premature aging. 5.29 oz. 82% Polyester/ 18%Elastane. ImportedFit: Fitted Sizes: Youth Medium,Youth Large, Colors: Graphite,Oasis,Red,