★★★★★
“I am so happy. I leave it on my cup 24/7!”Customer✓ Verified purchase
A wider base for your everyday drink
Your favorite tumbler.
A steadier landing.
Meet Steadi. It grips your tumbler and gives it a wider base to help resist tipping. Set your drink down. Keep it close.
From $14.95 · Free U.S. shipping · Drinkware not included
40 oz Stanley Quencher H2.0 fits.
Other tumblers? Check the base size below ↘
Other tumblers? Check the base size below ↘
The little base with a bigger footprint.
Steadi is the holder. Bring your own tumbler.
Steadi is the holder. Bring your own tumbler.
Lifestyle scene created with AI. See real product footage below.
✓ A wider support base✓ Goes with your drink✓ 12 colors to make it yours✓ Dishwasher safe
See what you’re getting
A small addition.
A wider place to land.
Your tall tumbler stands on a narrow bottom. Steadi gives it a broader footprint, so it has farther to tilt before it can go over.
- 1
Fit it around the bottom
Six flexible fins grip a compatible tumbler.
- 2
Set the whole base down
Keep the complete footprint supported on a suitable surface.
- 3
Pick up. Sip. Set down again.
Steadi can stay with your drink as you move.
Make your everyday a little Steadier
Your tumbler. Your color.
Choose your set, then make it yours. Match them or mix them.
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Shop directly at Steadi Labs ↗
Big tumbler. Check the bottom.
Yes, the 40 oz
Quencher H2.0 fits.
It’s the base size that matters, not how much your tumbler holds. The 40 oz Stanley Quencher H2.0 has an owner-confirmed snug fit.
| 40 oz Stanley Quencher H2.0 | ✓ Confirmed snug fit |
|---|---|
| Base 2–3 inches across | Standard fit range |
| Base over 3 to 3.15 inches | Snug fit range |
| Base wider than 3.15 inches | Not a fit |
Check handle clearance, too. Remove any added boot before measuring. A brand name or ounce size alone does not establish fit.
Not sure about yours? Measure the bottom and send us the model or a photo. We’ll help you check before you order.
Keep your favorite drink in reach
Work time.
Down time.
Your-tumbler time.
One simple holder for the drink you already reach for every day. Take it from the desk to your favorite spot.
Pick your Steadi →From everyday Steadi customers
Little holder.
Well-loved idea.
★★★★★ 4.9 out of 5
Across 128 published product reviews.
★★★★★
“It’s like a cupholder that goes with your drink. Highly recommend, great value for what it does!”Carlo V.✓ Verified purchase
★★★★★
“We love our Steadies! My kids prefer to drink out of open mouth cups as opposed to sippy cups. The problem is they often knock them over. This has solved the problem!”Rachel Smith✓ Verified purchase
Reviews cover Steadi with different drinkware and surfaces. Carlo’s review is excerpted. Read all reviews, including critical feedback →
90days to try it
Try it with your everyday drink.
Use it at home. If it isn’t right for you, you’re covered by our 100% money-back guarantee. Used is fine. U.S. returns are free.
Before you choose
A few good questions.
Will it fit my 40 oz Stanley?
Yes: the 40 oz Stanley Quencher H2.0 is owner-confirmed to fit snugly. Other models and sizes can have different bases. Measure the bottom of your drinkware: 2–3 inches is the standard range, with a snug fit up to 3.15 inches. A low handle or an added boot can interfere.
How is this different from a tumbler boot?
Steadi widens the footprint supporting your drink. Its six flexible fins grip the lower part of the container, while the broad base puts the tipping edge farther out. A protective boot mainly follows the shape of your tumbler’s existing base.
Does Steadi make my tumbler spill-proof?
No. Steadi helps resist tipping; it does not seal your lid or make a drink impossible to knock over. Keep the whole base supported, away from edges, and use a suitable surface. The actual container, fill level and placement affect the result.
Does it stay on when I pick up my drink?
The fins grip a compatible container so Steadi can travel with it. Fit varies by base shape. For a snug tumbler, hold Steadi and gently work the tumbler free when you want to remove it.
Is it a car cup holder adapter?
Steadi is a freestanding base for setting your drink down. It is not an adapter designed to fit inside an existing car cup holder.
How do I clean it?
Rinse or wipe it clean, or put it in the dishwasher. Steadi is made from TPU, not silicone.
What comes in my order?
The number of Steadis and colors you choose. Your tumbler, cans and other drinkware are not included. You can match your set or mix individual colors in the picker.
How soon will it arrive?
Orders ship from Orange, California within 1–2 business days. Standard U.S. shipping is free; delivery typically takes another 3–5 business days after shipment. Timing is a carrier estimate.
What if it is not right for me?
Your order has a 90-day, 100% money-back guarantee. Used products are eligible, and U.S. return shipping is free. Contact Steadi Labs to start a return. See the full returns policy for instructions.
Your next sip. A little steadier.
Choose your Steadi →Free U.S. shipping · 90-day money-back guarantee