The ORIGINAL Shark Mark Silicone Drink Markers Wine Glass Charms *The Shark Mark silicone wine glass drink markers are great for any occasion; not just for wine glasses. *Each drink marker bites into the glass and won't let go! These wine charms are very sturdy and don't fall off when you take a drink. *Easy to clean and can be stored in the box. *Shark Mark fits many different types of glasses, not like some markers that only fit thinner lipped wine glasses. *A great gift idea!