Featuring a stylish air-pocket construction, our double-walled glassware works like a high-tech tea cosy. Each piece in our collection of mouth-blown borosilicate glassware is unique, & the double-walled insulation system keeps your drink hot while the glass remains cool to the touch. Our Rialto glasses are super for tea, but equally good for a glass of Cold Brew or iced coffee. Capacity: 250ml