Hydration is easy with this Cool Bottle, even when you're on-the-go. It features a double non-stick interior, which provides greater protection of the stainless steel against salt-containing beverages like sports drinks. It also comes with an antibacterial drinking mouth. With Zojirushi's high-quality vacuum insulation, the Cool Bottle will keep your drinks icy cold for hours without condensation. Air vent on the mouthpiece allows beverages to flow out smoothly, without gushing or overflowing. 4.5cm wide mouth. The stainless bottle can be completely washed. Double nonstick coating makes the bottle easy-to-clean, and can filled with sports drinks. Equipped with protect armor. Seamless lid that eliminates the need to remove the packing and wash.