With the Madam Sew’s T-shirt alignment ruler you can position and center T-shirt designs very easily and quickly. Just align the top part of the ruler with the collar of your T-shirt and add temporary marks or apply your design with your hot iron, pins, markers or fabric glue. These T-shirt guide rulers are used for many design applications and ornamentations. The T-shirt positioner is a very popular ruler to align HTV (Heat Transfer Vinyl) or sublimations. One ruler set has four different sizes of T-shirts: adult, youth, toddler, and infant. The T-shirt rulers are transparent, lightweight and reusable Clear markings in inches Can be used for a variety of applications Works with different brands of heat press machines, sublimation, screen printing, vinyl press, etc. Perfectly centered designs in a couple of seconds! A must have for professional looking results! The - Shirt Positioner can also be purchased bundled up with other Heat Transfer Vinyl Basics. Check out our Heat Transfer Vinyl Bundle. Specifications Made of clear, flexible plastic. Contains 4 rulers for 4 T-shirt size categories: adult, youth, toddler, and infant WARNING: This is not an ironing Ruler. Plastic will melt under high heat, so align your design and remove the positioner before pressing. Instructions & More Easy to use: Align one of the rulers with the collar of the t-shirt Center your design Press, pin or glue the design on your T-shirt. We also also have online user instructions for the Madam Sew t-shirt positioner