CornerStone Industrial Snag-Proof Pique Polo. CS4020Snags, moisture, odors and stains are no match for this ultra-rugged performance polo, built to take on the most rigorous jobs., 6.5-ounce snag-proof polyester pique, Rental-friendly, Tag-free label, Flat knit collar, 3-button placket with dyed-to-match buttons, Open hem sleeves, Side vents