Available sizes: preemie, newborn, 3 to 6 month, 6 to 12 month, 12 to 18 month, age 2 to 4, age 5 to 8, age 9 to 12, and adult. In your message to the seller, please specify the SIZE and NAME for this personalized item. Available colors are viewable at the right. Example: 6 to 12 month, chocolate brown with denim design for Kyden and navy with white for Andrew . Thank you to Sarah for the adorable photo of Emerson in his new hat and to Kathleen for the equally adorable photo of Andrew in his new hat!