These require a professional heat press! Large Iron-on Patches AMAZING Quality Chenille Patch!! This is an IRON-ON or SEW-ON PATCH NOT DTF OR VINYL!! Perfect for DIY! Sweatshirts, Bags...etc.! Size: Approximately 10.5 inches Tall x 8.75" Wide PRESS INSTRUCTIONS 1. Place the patch on the material chenille side up 2. Place cotton fabric over patch (or Teflon *preferred/Parchment Paper). 3. Iron over patch, applying pressure, on high (approx. 150f) for about 30 seconds without steam. 4. Iron inside of garment underneath patch for 30 seconds *Repeat as necessary Professional Heat press temp is about 320f degrees, but temperature could vary by machine.