This adorable personalized birthday shirt with "I am one (or any age)" in rainbow colors and number age and name on the back is perfect for your little one's special day! Whether celebrating a special first birthday or second, third, fourth, fifth or beyond, this precious tee personalized with the birthday girl or birthday boy's age and name (if desired) is sure to please! So, so cute and ideal for birthday party photo memories! The birthday shirt can always be customized with your specific wording and colors. Just add your custom requests to the "Special Instructions / Notes" section when ordering. This digitally printed t-shirt means that the fibers of the shirt are actually dyed with eco-friendly water based inks and is printed on a superior quality, super soft t-shirt for long lasting durability.