Abstract: A device and methods of using the device that facilitate the application of designs to a brim of a hat are provided. The methods can include a method of applying a decal to a brim of a hat. A material sheet can be provided, with the material sheet including a backing material and a decal material, the decal material including a first side having a printed design and a second side including a first adhesive. A decal can be formed from the material sheet using a decal template shaped and sized to the brim of the hat extending from a dome of the hat. The decal can be applied to the brim using a heat press.