Zoku’s 16oz double-wall suspended glass core bottle is the perfect balance of health, style, and durability. Fill it with your favorite hot or cold beverages and enjoy the flavors in their crispest form—fresh from this pure borosilicate glass bottle. The glass, thread-free mouthpiece will not hold flavors, allowing you to switch between beverages easily. The strong, triangular tessellation found on the silicone pads protects the bottle from bumps and drops. Take your bottle everywhere without the worry of spilling it! The 1/4-turn locking cap system is leak-proof and worry-free!.