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;