Charcoal Grey Ethereum Superior Cotton Mesh Snapback. Five Panel Cap, 100% Cotton Front / 100% Polyester Mesh Back. Head circumference - 22 1/2“ to 24 3/8“. Our Ethereum Hat Logos are Embroidered Beautifully and Made From All High Quality Materials. Here at Krypto Threadz Our Ethereum Hats and Ethereum T Shirts are #1 in the Market for Cryptocurrency Related Clothing and Apparel. You Will Not Be Disappointed.