5 oz., 100% polyester jersey knit; AquaFX? wicking properties; Freshcare? anti-microbial properties; Double-needle hemmed ?" sleeves and bottom hem; Rib knit collar (no topstitch); Tear away label; Gildan's manufacturing process utilizes 45% renewable energy; Gildan?s Community Investment Program supports education, the environment, humanitarian aid and active living in the communities we do business in