New Era MLB Unisex MLB 2016 on Field Sport Knit Beanie Acrylic 50%/Polyester 45%/Wool 5% Imported Official on-field Sport Knit for major League Baseball On-field Knit performance is enhanced through ne Tech featuring COOLERA and winterer Coolera moisture management System wicks away sweat while winterer protects from the elements of Winter and keeps the wearer warm Shell 100 percent Acrylic and the lining is 90 percent polyester/10 percent wool