With all of the features of their 1 selling Highland travel mug and more, the Avex ReCharge Autoseal Vacuum Insulated Stainless Steel Tumbler was built with the same ruggedness in mind but with attentive improvements to make the adventure even more fun. This double wall vacuum insulated tumbler is engineered with an airless space in between two walls to eliminate temperature change and keeps drinks hot for up to 8 hours or cold for up to 24 hours. The celebrated Autoseal lid automatically seals between drinks to eliminate spills and leaks, and the one handed button operation makes on the go drinking a breeze. The built in slide lock gives you reassurance the button will not accidentally engage, and the added spout cover keeps the drinking interface free of dirt and germs. A new and improved durable lid features a drop down mechanism for easy cleaning and is dishwasher safe. What are you waiting for Let the adventure begin!