Celebrate your child's birthday with an age specified Super Mario Brothers Birthday shirt! The shirt will be personalized with your child's age. The shirts are 100% cotton and are the "Gildan" brand. The shirt is available in black or white. The art is created using heat pressed vinyl. The t-shirts are pre-washed and available in the following sizes: 2T, 3T, 4T Youth X-Small (Equivalent to size 5-6) Youth Small (Equivalent to size 7-8) Youth Medium (Equivalent to size 10-12) Youth Large (Equivalent to size 14-16) Youth XL (Equivalent to size 18-20) When ordering please choose your size preference from the drop-down menu above. Personalization During checkout there is a "Note to LabelMyBaby" field. Please enter an age for the shirt here. Care When machine washing please turn the garment inside out and wash in cold water and use a tumble dry temperature of low. Shipping There is a 24-48 hour turnaround time once your order is placed. We ship via USPS. You can choose from either First Class Shipping (2-5 Business Days) or Priority Mail (1-3 Business Days). Both options will provide you with tracking details.