Champion Double Dry Men's Solid-Color Polo Shirt Body: 100% Polyester Micro Knit. Rib Collar: 100% Polyester 1x1 Rib Body - 100% Polyester Micro Knit. Rib Collar- 100% Polyester 1x1 Rib Ultra-soft micro-knit fabric wicks sweat controls moisture buildup to keep you cool and dry rib-knit collar fabric-taped neck seam tailored two-button placket double-stitched vented hem