The Number 4 Iron-On Fabric Patch, in gold, is a number-shaped iron-on patch with a gold finish that attaches to fabric using heat with an iron or heat press, without the need for sewing. It is widely used to personalize sportswear, backpacks, or t-shirts with a number of your choice, creating a decorative effect similar to that of a personalized sports jersey. The number 4 is a versatile option for personalizing sportswear or marking an age on a commemorative birthday item.