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Act fast! These TikTok-famous 40-ounce Stanley tumblers are back in stock at Amazon

Whether you barely know what TikTok is or could spend hours swiping through the app, there's a good chance you've heard of Stanley Quencher tumblers. These viral vessels sell out constantly, thanks to their sturdy design and ability to keep drinks hot or cold for hours. But we have good news — Stanley's elusive 40-ounce tumbler is back in stock at Amazon and it now comes in two new hues (to make a total of 17 gorgeous color options). If the past has taught us anything, it's that these tumblers fly off the shelves, so grab 'em while you can!

This bestselling insulated travel mug can keep drinks hot or cold for hours, and its tapered design fits into most cup holders.
$45 at Amazon

If there's one thing TikTok is good for, it's discovering quality products, and the No.1 bestselling Stanley Quencher is no exception. This 40-ounce behemoth — endearingly nicknamed the Stanley Cup — is sure to keep you hydrated for hours on end; and you won't be sipping on lukewarm liquid, either. The cup's double-wall vacuum insulation ensures your drink stays cold for up to 11 hours, hot for seven or iced for two days! Plus, it's made from durable BPA-free stainless steel and features a tapered bottom that'll fit inside most cup holders. Travel-friendly, thermo-regulating and dishwasher-safe?! It's no wonder TikTok reviewers are obsessed with it.

In addition to all of the aforementioned bells and whistles, the Stanley Quencher has a handy rotating cover so you can choose to drink from the included straw or via an opening in the lid. The cover also completely closes to help prevent spills when you're between sips. Another convenient feature is the ergonomic handle, which makes for easy transport — and with 17 stunning neutrals and eye-popping shades to choose from, you'll want to bring what is sure to be summer's hottest accessory with you everywhere.

TikTok isn't the only platform where you'll find Stanley fans — keep reading to see what some of Amazon's five-star reviewers had to say about the famous travel mug.

the stanley tumbler in two colors
The beloved Stanley tumbler is available in two new hues just in time for summer: Pool and Tigerlily. (Photo: Amazon)

"Best purchase ever!" raved one happy shopper. "I've used many, many, many water bottles... This is by far the best one I've ever purchased. Great quality, and the fact that it has a handle and a wide straw really helped me to drink more water than ever before. I love this thing! An added bonus is that it fits in my cup holder."

"Great quality," said another impressed customer, adding, "It keeps my drink cold for the whole day and the ice doesn’t melt, which is a good thing, since nobody likes their drink watered down. Keeps hot as well. I would totally recommend."

"Just as expected!" wrote one succinct reviewer. "Keeps ice in my cup for several days. Very cute and functional!"

Whether you opt for a classic neutral, pastel or one of the summery new shades, the Stanley Quencher will quickly become one of your favorite investments. Happy hydrating!

It's made from durable, BPA-free stainless steel that's dishwasher-safe!
$45 at Amazon

If you have Amazon Prime, you’ll get free shipping, of course. Not yet a member? No problem. You can sign up for your free 30-day trial here. (And by the way, those without Prime still get free shipping on orders of $25 or more.)

The reviews quoted above reflect the most recent versions at the time of publication.