Rhinestone Transfer " Crystal Heart" Iron On, Hotfix Rhinestone Transfer "Heart" Iron On, Hotfix, PICK YOUR COLOR " Heart " This is for a Hotfix Rhinestone Iron On Transfer. It measure 8" inches (W) X 8" inches (H). Made of all Crystal Rhinestones. This design can be applied by a household iron or a Commercial Heat Press, I will include the simple instructions for both.