CornerStone Select Lightweight Snag-Proof Polo. CS418A heavy-duty workhorse at a lighter weight than our standard snag-proof polo. Moisture-wicking and odor-fighting, this hardworking shirt also stands up to 50 industrial washes., 4.4-ounce snag-proof polyester, Tag-free label, Flat knit collar, 3-button placket with dyed-to-match buttons, Open hem sleeves