PA Vinyl iron on 12"x 20" stretch vinyl has a matte finish that works on cotton, acrylic, polyester, and blends. Not recommended for use on nylon. 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 medium, even pressure; preheat fabric for 3 seconds, then apply transfer for 15-20 seconds. Details:Available in multiple colors12" x 20"1 rollMatte stretch finishedWorks on cotton, acrylic, polyester, and blendsNot recommended for use on nylonAllow 24 hours before washing; wash inside out and tumble dry