Transfers should be applied with a commercial grade heat press. The temperature should be set to 310 degrees fahrenheit with medium to firm pressure. PrePress for 3 seconds. Press for 12 seconds and peel cold. It is not required but we do recommend a 2nd 12 second press using either a parchment sheet to cover the design. These times and temperatures are what we find works with most heat press equipment and fabrics. For poly that may bleed, temperature can be lowered to 275 and time reduced to 10 seconds. You should test and adjust the time and temperature you use based on your equipment and materials.