Convenient to use: position your design and align the ruler with the front and back of the collar, then press it. With precise gradations and numbers, the markings are clearly visible, have a long service life. SPECIAL GRID LINE:T shirt alignment rulers with special grid line are more efficient for your DIY enthusiast to improve the accuracy of sewing, and allow quick centering of designs every time. Upgrade Materials These t-shirt rulers are made of durable PVC material, which is not easy to break. The edges are smooth without burrs, do not hurt your hands and are safe to use without worrying about breaking. Clear Graduation The t-shirt alignment ruler has clear and accurate numbers and markings, is easy to read and use, and helps you focus your designs, saving you time and making. Wide applications: the shirt only fits the different sizes: adults, teenagers, children, but also all neck types.It is perfect for sewing, clothing DIY, measuring, shirt printing. You can share it with your friends, dressmakers, lovers of sewing projects and others as a gift!