For fabric we use 2mm felt and we offer an assortment of thread options beyond the regular color palette such as glow-in-the-dark, metallic and neon. Iron-on backing is an option that we typically recommend. Pricing varies based on a variety of factors like size, number of colors, stitch count and number of stitch jumps. Send us an e-mail at Info@BurnerPatches.com and we can provide an estimate.