We've tested a great many tumblers, and not all are winners. These are two we don’t think are anywhere near as good as our picks above.Greens Steel's Beast tumbler has nearly 14,000 positive reviews on Amazon and is, at least for me, one of the top hits when I search Amazon for an insulated tumbler. But the rubber seal around the lid is thin and easily comes out of place.
It’s a double-walled, insulated stainless-steel tumbler with a glossy finish, and it comes with three lids, for some unnecessary reason. There’s a white screw-on lid that needs to be removed every time you want a drink, and a black version of the same lid. The third lid—one with a sipping hole that can be closed with a sliding latch—makes the Kanpai leak if tipped over. It took damage in a mere 3-foot drop when it was empty. It landed on its rim, which flattened.
What are you, some kind of wannabe camel? Just drink your drink and get on with your life.