Easily mark your glasses with these nature inspired Grape drink markers from Charles Viancin. Made from silicone, these drink markers come in a variety of colors so drinks don't get mixed up. The suction cup on the back makes application easy and won't leave a sticky residue when removed. This set of markers is perfect for your next wine party or large family dinner. Even better, these BPA free drink markers are dishwasher safe, making clean up quick and convenient.