Personalized Knight and Castle Birthday Shirt. This birthday tee-shirt is great for your knight in shining armor to wear on his special day. The number is appliqued to look like a castle and there is a knight on his horse embroidered next to the castle. You can choose the number for your childs age (1-9). This is a regular style tee shirt and you can choose long or short sleeves. This will also be personalized with your child’s first name below the design. Please note the number needed during checkout.