Sport-Tek Sport-Wick Stretch 1/2-Zip Pullover. ST850An extremely flexible layer with a soft-brushed backing and moisture control for year-round comfort., 6.8-ounce, 90/10 poly/spandex jersey, Tag-free label, Smooth-faced, Chin guard for additional comfort, Cadet collar, Taped neck, Raglan sleeves, Open cuffs and hem,