Invisible pen with glasses
Invisible pen is a hot sale product among poker players. They can use it to mark cards at home on their own, private and safe place to them and do not change the shapes and smell of their poker cards.
Invisible pen exactly called marked cards invisible ink pen. You can write down any marks you want on playing cards, such as value and suits of the cards. After the ink dried, it will disappear and at this moment, take out the glasses to check with the invisible marks. It is luminous ink glasses not normal glasses.
Invisible ink pen with luminous ink glasses is a set of good tool to experience something you never have. Try it now.