With technology inspired by the lotus effect, we transform silicon dioxide, one of the most fundamental elements on the earth, into a flawless interior glass finish that keeps drinks pure. Union Top has soft stopper lock in open and closed positions. Integrated handle for secure carrying. Recommended for use with cold or neutral temperatures. Unbreakable interior glass finish

Double-wall vacuum insulated

Surgical grade stainless inner

12 hours hot / 24 hours cold

Leak-proof