Iron on patches work best with materials like cotton and polyster, please avoid nylon, rayons and rain jacket materials.
Iron should be placed on the highest heat setting
To protect both the fabrics' surface and the patch, place a pressing cloth (cotton pillowcases work great) between the patch and the iron.
Press the iron downward and hold it in place for 30 to 45 seconds.
Be careful not to move the iron around (can shift the position of the patch).
Once the patch is affixed to the fabric, turn the item of clothing inside out and lay it flat on the ironing board. Position the pressing cloth over the reverse side of the patch and repeat steps 4 & 5.