Works on cotton and polyester. Light, very stretchable with a foil metal effect. CPSIA Certified, so it’s safe on garments for any age. Pre-shrink any shirt with cotton content. Use a quick one-second tack application for layering. Apply with firm pressure; preheat fabric for 3 seconds, then apply transfer for 15-20 seconds. To maintain high gloss foil effect, wait for liner to cool completely before removing.Details:Available in multiple colors12" x 14"1 sheetFoil finishUse on cotton and polyesterStretchableCPSIA certifiedRemove liner when cooled completely