Our new stainless travel mug is our best ever! Double wall stainless steel keeps your favorite beverage hot, while the screw-on lid features a pop-up top that is, believe it or not, leak-proof! When in the locked position, we've turned our mug upside down and didn't spill a drop. Amazing! 16 ounces in capacity, it is sure to become your favorite travel mug of all time!