Teikis Butter Metallic Smooth Writing Pens - 3 Pack Pens for Wine, Glass Bottle, Ceramic, Plastic and Kitchen Pens Multi SURFACE and PERSONALIZATION - Easily personalize your guests drink's, so no one has to wonder whose drink is whose. Can be used on glass, ceramic, plastic, and much more. Perfect for writing on windows, marking glass jars, mason jars, plates, wine bottles and cup, or food containers. COLORS - Comes in 3 Smudge Proof Colors: Gold, Black and Silver. Perfect for parties, weddings, reunions, anniversaries, and much more NON TOXIC - These markers are non-toxic, produce no dust, no mess, and no smell. That makes them perfectly safe to use on your food or drink containers EASY CLEAN UP - These markers will stay in place until you wash them off with a damp cloth. No scrubbing necessary LIFETIME WARRANTY - 100% Money Back Guarantee with LIFETIME Warranty