All categories/Outdoors/Insulated Tumblers & Bottles/Stanley/Stanley Quencher H2.0 FlowState 40 oz
Stanley Quencher H2.0 FlowState 40 oz

Stanley Quencher H2.0 FlowState 40 oz

Based on 17 comments across 2 communities
TL;DR
Owners consistently praise this Stanley for excellent insulation, keeping water cold and ice intact a day or longer, and they love that it slips into a car cup holder and has a comfortable, grippy handle. The recurring complaint is that it isn't leakproof, so it drips whenever it's tipped or laid on its side, and at 40oz it gets heavy and clunky when full. It earns strong loyalty for home and car use, but it's not the one to toss sideways into a bag.

76% of 17 verified owners recommend the Stanley Quencher H2.0 FlowState 40 oz.

What 17 owners sayⓘ 24% link it — looks organic
301 comments reviewed · scored on the 17 clearest verdicts
76%
Recommend
13 owners
12%
Neutral
2 owners
12%
Don't recommend
2 owners
Source
Score
N
Counted in the score
Reddit
76%
17
Reviewed, but not counted — and why
Affiliate blogsipaid commission
0%
2

Affiliate blogs here say 0% recommend, while the owner-based score is 76%. They earn a commission on every sale — so we show them for transparency but never let them move the score.

The headline score reflects owners (Reddit, enthusiast forums), independent lab tests, and blogs with no affiliate links. YouTube and affiliate blogs are shown for perspective but kept out — hover the i for why.

What owners like
  • Keeps water cold and ice lasts a day or more · 8 · 47%
  • Fits in most car cup holders · 5 · 29%
  • Comfortable handle and grippy thumb area · 5 · 29%
  • Big capacity, enough to share · 3 · 18%
What owners flag
  • Not leakproof, drips when tipped or on its side · 5 · 29%
  • Heavy and clunky once filled · 3 · 18%

Top quotes, sourced

301 reviewed · 19 shown
Sentiment
Community
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Reddit▼ don’t recommend

I think the “cool” quencher is fine for OTF but the 40 oz is too clunky and awkward it is easy to tip over. Spills are minimal but do happen.

Reddit— neutral

I was gifted my first Stanley, which was a 40oz, and I thought it was *perfect* for at home use but a bit impractical and heavy for class/desks and just traveling with me for daily errands and outings.

Reddit⚠ product link▲ recommend

The [Stanley](https://www.stanley1913.com/products/adventure-quencher-travel-tumbler-40-oz?utm_source=foursixty&utm_medium=content&utm_campaign=website%20shoppable%20social) 40oz is god tier. It’s big enough so I can share with my DH, it keeps things cold, and it does fit in the cup holder.

Reddit▼ don’t recommend

FYI: Stanley cups contain lead underneath the bottom cap. I don’t want lead anywhere near a cup I drink out of everyday, but you do you.

Reddit⚠ product link▲ recommend

I got it off their site when they restocked and I really like it. It fits in my cup holder and I love, love the handle.

Reddit— neutral

a 40oz Quencher I take to theory sometimes, but it doesn’t seem to keep water cold any better than the Meoky tumbler I got for $20 on Amazon.

Decaf Journal (affiliate)— neutral

Unfortunately it isn't leakproof. Stanley's competitors have come out with similar cups that are in fact leakproof, so this is somewhat disappointing.

Reddit▲ recommend

I recommend the Stanley Quencher 40 oz! It was my husbands birthday gift to me when I was newly pregnant, and it has been the absolute best thing because you need to drink an absurd amount of water during pregnancy.

Reddit⚠ product link▲ recommend

It fits in a cup holder, has a handle, large capacity, keeps water cold, is easy to clean in the dishwasher. The two marks it doesn’t get are price ($40) and leakproof

Reviewed (USA Today) (affiliate)— neutral

While the updated Stanley Quencher H2.0 Flowstate Tumbler is designed to be more leaf-resistant, it's by no means leakproof.

Reddit▲ recommend

I got one of those 40oz Stanley Quencher H2.0 tumblers, and it is amazing!! It keeps water cold all day, ice lasts from one day to the next, and the straw puts out more than a normal straw’s worth of water.

Reddit▲ recommend

With Stanley cups, I don’t have to do that. Fucking genius invention. I can just put it in my cupholder and not hear it rattle around in my car

Reddit▲ recommend

My Stanley 40oz Adventure Quencher tumbler is an extension of my body. It’s a gorgeous cream color and keeps water super duper cold.

Reddit⚠ product link▲ recommend

O gelo que meti dentro do Stanley meti-o ontem de manhã. Hoje ainda tem gelo e a água continua muito fresca.

Reddit▲ recommend

They do fit well I cup holders, even with a boot on. I’ve only seen it not fit in cars 10 years or older

Reddit▲ recommend

Stanley keeps my ice longer than Yeti though. The 40oz Quencher can keep ice for 2 days. The lid screws on too, there’s a rubber seal when you take out straw, it doesn’t spill like the OG Yeti / Packout and as spill proof as Yeti Stronghold version. Straw very durable.

Reddit▲ recommend

Reggel betöltöm a jéghideg vizet délutánra még pont ugyanolyan hideg.

Reddit▲ recommend

I gave in and got a 30oz and later 40oz - I prefer them.

Reddit▲ recommend

a 40 oz. Stanley Quencher tumbler that I drink at home