Add this Jason Giambi signed Oakland A's hat to your collection today! This hat is a must-have for any true Oakland Athletics fan. The signature is guaranteed to be 100% authentic and the hat is brand new, never worn. Show off your team spirit with this unique piece of memorabilia. Perfect for display in your home or office, or even to wear to games. Don't miss out on the opportunity to own this one-of-a-kind item.