Expect more from your straws and enjoy the full quality of Glass Dharma's glass beautiful bends drinking straws. Using clear, borosilicate glass, these four straws are both heat and cold resistant and are great for 10-12 ounce drinking glasses. The high quality of the glass catches and gleams light, accentuating your table and barware. What is more, they do not leach toxins into your food like some plastic straws, provide a more environmentally friendly solution in an age of disposables, and are guaranteed for life from the manufacturer. A white nylon headed brush is included to help with cleaning the straws.