New Era 59Fifty MLB Colorado Rockies Alternate 2 On Field Fitted Hat - 7.5 100% Polyester For the first time in over 50 years, the on-field caps have been altered to improve performance Moisture management takes moisture away from the skin into the fabric, keeping you cool and dry Two-component performance sweatband include a performance foam and moisture-wicking material Performance undervisor is made of black performance fabric to reduce glare Great hat for the Colorado Rockies Fan