Personalized Never Too Old To Believe T-Shirt. Cute Christmas T-Shirt - Pacific Blue says YOU'RE NEVER TOO OLD TO BELIEVE with silhouette reindeer and stars. You're never too old for the magic of Christmas. Perfect for adults and aging elves. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.