What do they use to make a disiengh on a hat?

To create a design on a hat, various techniques can be employed, such as embroidery, screen printing, or heat transfer. Embroidery involves stitching the design directly onto the fabric, providing a durable and textured finish. Screen printing uses ink pressed through a mesh stencil to transfer the design onto the hat, while heat transfer involves applying a design using heat and pressure, often with vinyl materials. Each method offers unique aesthetics and durability depending on the desired outcome.