Zojirushi stainless steel Vacuum insulated mug keeps beverages cold for hours with an easy-to-clean double nonstick interior and plastic rim on the body to provide greater protection against salt-containing beverages like sports drinks. Easy-to-use flip open lid makes hydration a button press away and a drinking spout with a vented design aids smooth flow of liquid. The insulated lid minimizes condensation and the stopper disassembles for thorough cleaning. Bottle is lightweight and compact and the safety lock feature prevents the lid from accidentally opening. 1-7/8″ (4.5cm) wide mouth opening makes filling easy. Made of BPA-free plastic and 18/8 stainless steel.