The NEW 12oz Crystal-Clear Rocks Glass offers the timeless charm and style of glassware with the practical durability, and sustainability of silicone. Pair this "clear as crystal," ultra sophisticated barware with your favorite whiskey, cocktail, or bubbly water. Discover the function and form of our latest unbreakable design. Won’t dent, scratch, shatter or crack 100% food-grade silicone, non-toxic and BPA-free