The patches can be ironed onto fabric like shirts, jeans, hats, blouses, pants, skirts, etc. Do not apply to rainwear (waterproof), highly elastic, rayon, nylon or tri-acetate fabrics that cannot withstand heat.INSTRUCTIONS1.Set hand iron at the hottest setting (Do not use water or steam during application)2.Place your patch in the desired position place a pressing cloth (such as a handkerchief, sheet or pillowcase fabric) over top.3. Press firmly with the iron straight down for 35-45 seconds.4.Turn the garment inside-out and repeat steps 2 3 ironing on the reverse side.5. Allow patch to cool down before testing.Once the applied patch is permanently attached to the garment and is washable, dryable and dry cleanable. For machine washing, turn the garment inside-out before washing and drying.