Zojirushi's NEW printed design, “HANA KANA” collection displays modern and sophisticated patterns with the motif of the traditional Japanese “flower (hana)” prints (silver and pink) and “kana” characters (black and white). Zojirushi Stainless steel Vacuum insulated mug keeps beverages hot or cold for hours with a tight fitted flip-open lid. The easy-to-clean double layer nonstick coated interior enhances durability and provides greater protection of the Stainless steel against salt-containing beverages like sports drinks. The 2-step lid release process prevents excess condensation on the stopper from being flung off when the lid is opened. The lid also contains a safety lock feature to prevent the lid from accidentally opening. The air vent on the mouthpiece allows beverages to flow out smoothly, preventing any gushing or overflowing. The bottle's wide-mouth opening is 1-5/8" (4cm). A special manufacturing technique was used to make the body lightweight and compact for easy and convenient portability. All parts are made of BPA-free plastic and Stainless steel.