Back-Side Marked Cards Contact Lenses Size:4 mm Once you have the plastic

Once you have the plastic bicycle invisible ink playing cards

Weighted dice

Contacts lenses typically aren't affected by weather conditions and won't fog up in cold weather like glasses

which are marked by printer with special invisible ink

For the magic contacts

Back-Side Marked Cards Contact Lenses Size:4 mm Once you have the plasticPupil color Dark purple Pupil diameter 4 mm, 6 mm, 9 mm, 12 mm Water content 50% Validity period About 1 year Central thickness 0. 06 0. 10mm Application Magic, poker cheat, casino game Back side marked cards contact lenses are not a new idea for the markets. To meet the need of different customers, there are 4 different size 4 mm, 6 mm, 9 mm, 12mm in diameter. The contacts lenses is famous for the magic function of reading the invisible infrared ink