
S'well
Tumbler XL | 40oz
Reviewed by the The Top Finds editors · How we test
You'll complete your purchase on S'well's site · price checked May 20
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Best for
The work-from-home drinker, poolside lounger, or road-tripper who wants to refill once and be done — and who cares about aesthetics enough to want something presentable on a desk or in a photo.
Skip if
You need a truly leak-proof tumbler for a bag or you want something lightweight enough to forget you're carrying it.
Price tier
Mid-range
$32
The verdict
The S'well Tumbler XL is the 40oz daily driver for people who want serious all-day hydration without sacrificing the brand aesthetics that make it worth leaving on the counter.
What we love
- Genuinely handsome colorways that hold up to daily visibility
- Stainless steel lid fits securely with no wobble
- 40oz capacity means fewer refills throughout the day
- S'well's insulation keeps cold drinks cold for hours
- Straw angle is thoughtfully positioned for comfortable drinking
Worth knowing
- Splash-proof only — not leak-proof if fully inverted
- 1.18 lbs empty is heavy; full, it's a two-hand lift for some
- The built-in straw isn't replaceable if it wears out
- Wide-mouth tumblers this size can be awkward in standard cupholders
Our review
The case for going big
We have tried a lot of 40oz tumblers — the market is genuinely crowded — and the S'well Tumbler XL earns its place on a simple premise: it looks and feels like something that cost more than $32. The Powder Blue colorway in particular is a muted, dusty shade that photographs beautifully and holds up against the visual noise of most kitchen countertops. It reads "grown-up drinkware" rather than "stadium souvenir."
The form factor is familiar if you've touched anything in the wide-mouth tumbler category. What S'well brings is the build quality the brand has always been known for — the stainless steel feels dense in hand, the seams are clean, and there's none of the tinny rattle you get from cheaper competitors.
The lid and straw situation
The stainless steel lid with built-in straw is the make-or-break detail here. We're happy to report it works. The fit is secure enough that you can toss this in a bag without anxiety, and the straw is positioned at an angle that actually makes drinking comfortable whether the tumbler is sitting flat or tilted slightly in a cupholder. It's a small thing that many tumbler lids get wrong.
That said, "splash-proof" is the operative word — not leak-proof. If this goes horizontal in your gym bag, you may have a problem. Keep that distinction in mind before you test its limits.
Living with 40 ounces
Forty ounces is a commitment. At 1.18 lbs empty, the Tumbler XL has real heft, and once you've filled it, you're holding something substantial. That's not a complaint so much as a use-case filter: this isn't a desk sip cup you pick up and put down every few minutes without thinking. It's more of a sit-and-drink vessel, ideal at a work-from-home desk, poolside, or on a long road trip where you want to refill as infrequently as possible.
The triple-layer insulation S'well is known for keeps cold drinks cold for a genuine stretch of time — long enough that you'll finish the contents before they've warmed to the ambient temperature of your room. We've found it most satisfying with iced tea and sparkling water, where the straw experience is at its best.
The $32 question
At this price, you're buying into S'well's brand positioning as much as the product itself. You can find 40oz insulated tumblers for $15. Some of them are fine. What you're paying for here is the design restraint (no loud logos, no aggressive color blocking), the quality of the lid mechanism, and the confidence that the interior isn't going to leach anything strange into your water after six months. Whether that premium is worth it is a personal calculus — but for people who care about what they put on their desk or carry in public, we think it is.
Common questions
Tumbler XL | 40oz, answered
Is the S'well Tumbler XL leak-proof?
S'well describes it as splash-proof, not leak-proof. The lid is secure enough for normal tipping, but we wouldn't trust it fully inverted in a packed bag.
Does the S'well 40oz tumbler fit in a car cupholder?
It's a close fit in most standard cupholders. The wide base of large tumblers can be snug — worth checking your vehicle's cupholder diameter before assuming it'll drop right in.
Can you replace the straw on the S'well Tumbler XL?
The straw is built into the lid rather than a separately sold accessory. S'well does sell replacement lids for some products, but verify availability for this specific model before purchasing.
How long does the S'well Tumbler XL keep drinks cold?
S'well doesn't publish an exact hour count for this model. Based on the triple-layer insulation the brand is known for, you can expect cold drinks to stay cold for several hours under normal conditions.
Is the S'well Tumbler XL dishwasher safe?
S'well generally recommends hand-washing to preserve the exterior finish and lid gasket on their drinkware. Check the specific care instructions that come with your product.
How does the S'well Tumbler XL compare to a Stanley Quencher?
Both are 40oz insulated tumblers with straw lids at a similar price point. S'well skews toward cleaner aesthetics and a more premium material feel; Stanley has a larger cult following, a handle, and wider retailer availability. Neither is objectively better — it's a design and ecosystem preference.
Ready to buy
Tumbler XL | 40oz
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