A Personal Creations Exclusive! It’s a Sesame celebration of your child’s name! Our Elmo Initial Alphabet T-Shirts are available in sizes XS 2-4, S 6-8, M 10-12 and L 14-16. Our youth T-Shirts are made of a machine washable, cotton/poly blend. We personalize the Elmo Initial items with any name, up to 11 characters.