Quick answer
Does the Stanley Quencher leak?
What Stanley says about the Quencher H2.0 FlowState lid (a full-cover top designed to resist splashes), what published reviewers report, and how they suggest carrying it.
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Stanley describes the Quencher H2.0's FlowState lid as having "a full-cover top to resist splashes", and its product page doesn't describe the lid as leakproof. Reviewers at OutdoorGearLab, Wirecutter and Good Housekeeping report that it can leak when it's tipped over or carried on its side.
On this page
What does Stanley say about the lid?
Stanley's product page: "The lid features a rotating cover with three positions: a straw opening, a wide mouth for drinking, and a full-cover top to resist splashes" (Stanley). The Amazon listing describes the straw opening as "designed to resist splashes" and the full-cover top as giving "added leak resistance" (Amazon listing).
What do independent reviewers report?
OutdoorGearLab wrote that the Quencher "is not leakproof, even when fully closed, so be sure to keep it upright." It also wrote that if you "toss this sideways into the bottom of your bag, you'll end up with a soggy mess" (OutdoorGearLab). Wirecutter's reviewer wrote that she retired hers after about a month "because of the leaking" (Wirecutter). Good Housekeeping wrote that it "still leaks when knocked on its side and should be held upright" (Good Housekeeping). These are the reviewers' findings. We haven't tested it ourselves.
The products in this guide
Pros and cons summarize the sourced specs on this page. They aren't test results.
Stanley
Stanley Quencher H2.0 FlowState 40 oz
Consider it if: It will mostly sit in a car cup holder or on a desk, and you want a handle
Highlights
- Stanley says sizes up to 40 oz fit most car cup holders
- Stanley lists it as dishwasher safe
- Five sizes, from 14 to 64 oz
Keep in mind
- Stanley describes the lid as splash-resistant, not leakproof
- Reviewers report leaks when it's tipped or on its side
- 11.02 in tall (40 oz)
All sourced specs
- 40 oz tumbler with comfort-grip handle; also 14, 20, 30 and 64 oz (Stanley)
- FlowState rotating lid: straw opening, wide mouth for drinking, and a full-cover top "to resist splashes" (Stanley)
- Double-wall vacuum insulation; 90% recycled 18/8 stainless steel, BPA-free (Stanley)
- Stanley lists 11 hrs cold, 2 days iced and 7 hrs hot for the 40 oz
- Base diameter 3.1 in; Stanley says sizes up to 40 oz fit most car and truck cup holders
- Dishwasher safe (Stanley)
- 3.54 × 5.43 × 11.02 in, 1.18 lb (Stanley)
- Lifetime warranty on drinkware, excluding lids, seals and straws, if bought from Stanley or an authorized seller (Stanley)
HydroJug
HydroJug Traveler 40 oz
Consider it if: You want a handled 40 oz tumbler for the car whose maker calls it leakproof
Highlights
- HydroJug says it's completely leakproof with the straw down
- HydroJug says it fits standard car cup holders
- Rated up to 6 hours hot by HydroJug
Keep in mind
- The leakproof claim is HydroJug's own
- Some prints are hand-wash only
- HydroJug says not to microwave or freeze it
All sourced specs
- 40 oz (1,183 mL) stainless-steel tumbler with handle; also 20 oz, 32 oz and Kids 20 oz (HydroJug)
- Circular flip straw with a hygienic flip tab (HydroJug)
- HydroJug says it is completely leakproof with the straw down
- "Keeps cold up to 24hrs / hot up to 6hrs" (HydroJug product page)
- Insulation: the product page's spec table says double-wall vacuum; its description and the collection page say triple-wall
- Base diameter 3.04 in; HydroJug says it fits standard car cup holders
- 3.9 × 6 × 9.84 in, 20 oz (HydroJug)
- Dishwasher safe, top rack recommended; some prints are hand-wash only; do not microwave or freeze (HydroJug)
Owala
Owala FreeSip 24 oz (stainless steel)
Consider it if: You want a bottle with a locking lid that you can sip from or swig from
Highlights
- Owala lists the lid as leak-proof
- Built-in straw plus a wide-mouth opening
- 3.12 in diameter with a carry loop and no handle
Keep in mind
- Owala says not for hot, carbonated or perishable liquids
- No cup-holder claim from Owala; measure your cup holder
- Owala recommends hand-washing the stainless cup
All sourced specs
- 24 oz stainless-steel insulated bottle; also sold in 32 oz and 40 oz (Owala)
- Owala lists it as triple-layer insulated
- FreeSip spout: sip through the built-in straw or swig from the wide-mouth opening (Owala)
- Push-button lid; carry loop doubles as a lock when closed (Owala)
- Owala lists a "Leak-proof lid"
- Owala's product page says "24 hours cold"
- 24 oz size: 10.68 in tall × 3.12 in diameter (Owala)
- Lid top-rack dishwasher safe; Owala strongly recommends hand-washing the stainless cup
- Owala: not for hot, carbonated or perishable liquids
- Limited lifetime warranty (Owala product page)
How do reviewers suggest using it?
Upright. OutdoorGearLab wrote that the Quencher "is meant for cup holders, desktops, and other flat surfaces" (OutdoorGearLab), and Good Housekeeping says it "should be held upright" (Good Housekeeping). Stanley says the full-cover position is the one designed to resist splashes (Stanley).
Which similar tumblers do their makers call leakproof?
If you want a handled 40 oz tumbler, HydroJug says the Traveler is completely leakproof with the straw down (HydroJug). If you'd rather carry a bottle, Owala lists the FreeSip lid as leak-proof (Owala). These are the manufacturers' claims.
Frequently asked questions
Is the Stanley Quencher H2.0 leakproof?
Stanley doesn't describe it that way. Its product page says the full-cover top is designed to resist splashes. Reviewers report that it can leak when tipped or carried on its side.
Can I put a Stanley Quencher in my backpack?
OutdoorGearLab wrote that "you can't throw it into a backpack," and Good Housekeeping says it should be held upright.
Sources
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