This customization option allows you to add 2-inch twill sewn-on letters to the upper back of your garment. These letters have a glue backing that is heated into place first on the back so there are no bubbles, then each layer is sewn down. There is an option to add 1 or 2 color letters on the back. If you'd like to add 1-color letters select NONE in the border color drop-down. Once you select the colors you would like to use, you need to change the quantity to the amount of letters used in the word. I.E. - photo shows SMITH, this would be quantity of 5. Selecting this option will add 2-3 business days to the delivery time.