YETIRambler 20 oz Stainless Steel Vacuum Insulated Tumbler w/MagSlider Lid

This is really well engineered and keeps liquid hot better than any other tumbler/mug I have owned BUT, it has a design flaw; the lid is thin and therefore joins the mug right where your lip touches the mug and your lip therefore is unable to make a proper seal resulting in a drip down the side every time you take a sip.Further the lid is a push fit, not screw on so you are unable to re-open once filled without risk of a spill. Just not thought through - poor designOn contactig the seller (be aware this is not directly from Amazon - I'd recommend only buying from Amazon not their third parties because of the 'smal-print return etc. terms) all they were concerned with was making the point that since it had been used it could not be returned. Poor product, poor customerservice. To be avoided!

Purchased for use in the car. Does not really fit cup Holder in car properly great other than that

So good it’s unreal keeps hot coffee drinkable all day