The Sun"s Tea (TM) double wall glasses keep your hot or cold drinks longer due to their unique double-wall feature. Its two walls allow you to hold onto a piping extreme hot glass of hot drinks without burning your fingers, or prevent condensation from forming on the outer wall while holding a cold beverage. This double wall glasses is made of stronger borosilicate glass which is perfect for your everyday use.* Sun"s Tea(TM) is the trade marker owned by SUN Valley Enterprises LLC