Buying guide
Which 40 oz tumblers fit in a car cup holder?
Base diameters and cup holder claims for the Stanley Quencher 40 oz (3.1 in) and HydroJug Traveler 40 oz (3.04 in), straight from each maker's product page.
We’re reader-supported and may earn a commission from links on this page. It never changes what the sources say. How we make money
Both makers say theirs fit. Stanley says Quencher sizes up to 40 oz "will comfortably fit most car and truck cupholders" and lists a 3.1 in base. HydroJug says Traveler sizes are "designed to fit standard car cup holders" and lists a 3.04 in base for the 40 oz. That's a 0.06 in difference.
On this page
What are the base diameters?
Does the 64 oz Stanley fit?
Stanley's cup-holder claim on its product page covers "Sizes up to 40 oz" (Stanley). The Amazon listing says the narrow base fits "just about any car cup holder" on all sizes "except 64oz" (Amazon listing).
The products in this guide
Pros and cons summarize the sourced specs on this page. They aren't test results.
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)
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)
What else differs between them in the car?
The Traveler 40 oz is 1.18 in shorter, by the makers' figures, and HydroJug lists a rubber base (HydroJug, HydroJug). OutdoorGearLab wrote that the 40 oz Quencher is "a little top-heavy and easy to knock over since the bottom narrows to be cup-holder-friendly" (OutdoorGearLab). We haven't compared the two in a car ourselves.
Frequently asked questions
Will a 40 oz Stanley fit my car's cup holder?
Stanley says sizes up to 40 oz fit most car and truck cup holders. Cup holders vary by vehicle, so measure yours against the 3.1 in base.
Is there a 40 oz tumbler whose maker says it's leakproof and fits a cup holder?
HydroJug says the Traveler 40 oz is designed to fit standard car cup holders and is completely leakproof with the straw down.
Sources
Spot an error? Tell us: [email protected]. See our corrections policy.
