Silcone Rubber Wine Glass Twin Pack (400ml/13fl oz, Clear/Opaque) Easy to clean: Made of Nonstick Silicone, cleaning them is a breeze, Dishwasher Safe (no more cracks and fine lines that shatterproof glasses get), Totally Reusable. 100% food grade silicone, they look and feel great! Great gift option for friends or family. Great for travel, you can easily pack them for travel in any backpack or bag, great for a day at the beach, camping, a picnic, spa, pool, etc. No more broken glasses. No drinking out of a childs cup! Eco-Friendly, flexible, lightweight and portable, easy to store and transport Made of Unbreakable, Squishy and Nonstick Food Grade Silicone, ideal for camping, party cups, won't break, fill them with beer, soda, water, or your favorite drink! Temperature range of -20 to +260 degrees Centigrade - they won't melt!