Create a permanent fade-resistant mark on your possessions, with ink that shines brightly when exposed to UV light. Mark your property (as recommended by the police) & make it more likely that your possessions are returned to you if stolen or lost, or use the permanent ink to create designs on clothing & accessories, & light up the nightclub. Use the pen alongside a handy UV keyring torch, so that you can see what you are writing. Once the UV light is turned off, your marks will be completely invisible to the naked eye. No need to buy extra overseals to protect UV mark A thicker marker pen for use on larger items Does not fade Ideal for marking personal property