GLOW IN THE DARK: Mofason Special glow wine cups made of high quality silicone, The glow wine glasses in the dark after intense light exposure for 1-3 hours. REASONABLE SIZE: Our unbreakable wine glass is 4.2" high, and the diameter of the cup is 2.3". We believe this reasonable size can definitely meet your needs. Small size make it easy to carry, you can easily put them in your pocket. ECO-FRIENDLY & ODORLESS: Mofason camping drinking glasses are made of food-grade silicone, FDA approved, BPA-free, non-toxic, no chemical reaction and odorless, eco-friendly, reusable. Soft silicone wine glasses, foldable wine glasses.