Sit By Me Silicone Wine CupPerfect for throwing in your beach bag when you need some wine to go or for a much needed break these lightweight and flexible wine glasses are fun and functional and fold into each other to make stashing in your bag a breeze! A great alternative to glass or wasteful plastic, our silicone wine glasses are perfect for using at the pool, beach, or at home. Dishwasher Safe. Microwave Safe. FDA Approved. California Proposition 65 Certified. Capacity: 12.