5 oz./yd./ 172 gsm (US), 8.4 oz/Lyd (CA), 100% polyester face plaited to 60/40 polyester/cotton back (total overall garment 61/39 polyester/cotton). Proprietary dual-sided mesh pique knit constructed of fine denier wicking polyester on the outside and soft-as-cotton wicking blend on the inside. Moisture-management performance. UV 15-39 protection. Matching flat-knit collar. Luxury, comfort and performance in one. Three-button placket. Dyed-to-match buttons.