vinolid is made from a high-end, plastic material that looks and feels like glass. It's an elegant and affordable way to hold your wine's aroma in the glass, while keeping insects and other debris out. Endorsed by winemakers, sommeliers and wine lovers! vinolid is the choice of wineries and tasting rooms in Napa and Sonoma. Bonus - Now ships with microfiber bag. Carry vinolid's in your purse or pocket. Use the microfiber bag to polish water spots from your vinolid's after removing from the dishwasher.