Gear up stand out and cheer loud with the New Era Red Sox Alternate Cap an essential accessory for every fans wardrobe As part of the 9Twenty MLB Authentic collection this cap ensures your passion for the Red Sox Nation is visible from every angle whether you are enjoying the game or celebrating a big win Constructed from 100% performance polyester this cap is versatile ultra-comfy and uber-cool helping you show your love for the Red Sox Nation through and through