I got these Curva Artisan Series Double Wall Beverage Glasses because I love the 16 oz ones that I got from the same company, Ozeri. They are made of borosilicate glass, which is said to be stronger and more durable than common glass. I didn't want to test this by dropping one of my glasses, but I like that they come with a 1 year warranty just in case. They each have a cool curvature that holds 8 ounces. Besides the cool designs, I love that these glasses have a double wall so when I use them for a cold drink, I don't have to worry about the mess of condensation. I have used these for juice, soda, water, and mixed drinks. I can't wait to use these at our next get together.