This Birthday Boy Superhero shirt is the perfect birthday outfit! Made of 100% cotton, machine washable and printed in the USA! This Superhero Birthday Shirt with Comic Book Hero Bubble is perfect for all ages, and makes the perfect gift for any superhero! If you're uncertain which size to choose, please use the gift guide below! Gift Guide Size Suggestions: First Birthday - One Year Old - 12 Months or 18 Months Second Birthday - Two Year Old - 2T or 3T Third Birthday - 3 Year Old - 3T or 4T 4th Birthday - 4 Year Old - 4T or 5T 5th Birthday - 5 Year Old - 5T or Youth Small 6/8 6th Birthday - 6 Year Old - Youth Small 6/8 7th Birthday - 7 Year Old - Youth Small 6/8 8th Birthday - 8 Year Old - Youth Small 6/8 or Youth Medium 8/10 9th Birthday - 9 Year Old - Youth Medium 8/10 or Youth Large 10/12 10th Birthday - 10 Year Old - Youth Medium 8/10 or Youth Large 10/12 11th Birthday - 11 Year Old - Youth Large 10/12 12th Birthday - 12 Year Old - Youth Large 10/12 or Youth XL 14/16 13th Birthday - 13 Year Old - Youth Large 10/12 or Youth XL 14/16 14th Birthday - 14 Year Old - Youth XL 14/16 15th Birthday - 15 Year Old - Youth XL 14/16 16th Birthday - 16 Year Old - Youth XL 14/16