Infinite Glassworks, Triangle TumblerTriangle shape at the bottom transitioning up to a free formed round top. These are made in a custom designed steel mold which causes ripples, lines and small fissures on the glass. This surface texture refracts the light when placed in a sunny location. How does it feel? A sturdy cup that wont tip over. The sides of the cup have a ripple texture and small bubbles are speckled throughout the glass. How can I use it? Perfect for large drinks such as