Hot Leathers, BLOOD TYPE B POS, High Thread Embroidered Iron-On / Saw-On, Heat Sealed Backing B+ Positive Rayon PATCH - 3" x 2" American Designed by Hot Leathers Brand USA - All Original Artworks Long Lasting, Durable with Suprioir Premium High Thread Rayon Quality All Patches Are Rayon Material. With Heat Sealed Backing or Easy Sawing Bright Colors, & Intricate, Incredible Designs, for Jackets, Vests, Backback, Jeans, & Many More Customize your gear with one of our high thread embroidered rayan patches. We guarantee youll find a favorite amongst our many designs! We have something for everyone.