“
I flipped it upside down… no leaks.
— Sarah J.
Verified
Dual Drink Innovation
DUAL CHAMBER 40oz TUMBLER w/ HANDLE (In-Production)
Carry two drinks in one cup.
$69.00
$110.00
SAVE 37%
Keeps drinks separate
Hot + cold at same time
Best for people who carry two drinks daily
Free Shipping Over $50
30-Day Returns
Total
$69.00
Because carrying two drinks is annoying.
Coffee in one hand. Water in the other. Trying to open a door. Grab your phone. Get to your car. Something always spills.
Splitflask fixes that.
Proof
Wow, it actually works.
That's exactly what people say… after they try it.
“
Both drinks stay at the right temp for hours.
— Michelle B.
Verified
How You'll Use It
Coffee + Water
The ultimate office companion. Stay caffeinated and hydrated without the clutter.
Pre + Post Workout
Energy before, recovery after. All in one hand.
Wine + Sweet Tea
For a relaxing day at the beach.
Mom + Baby
One side for baby and the other for mom–no more backwash.
Ice Coffee + Hot Coffee
Because you can never have enough coffee.
Engineered for your lifestyle
Carry less
One vessel replaces two bulky bottles. Clean up your commute.
Hot + cold together
Carry both without carrying both.
Separate chambers
Dual-wall vacuum insulation keeps flavors perfectly isolated.
Leakproof lid
Secure alignment technology ensures zero spills in your bag.
Cupholder friendly
Tapered base fits 99% of standard car cup holders.
Dishwasher safe
No complex parts. Pop it in the top rack and you're done.
A few things to know before you buy.
01
Lid Alignment
To ensure it's 100% leakproof, you need to align the markings on the lid with the chamber divider. It takes 2 seconds.
02
Size Matters
It's a high-capacity vessel. Slightly taller than a standard 30oz tumbler because it houses two separate 15oz chambers.
03
Easy Cleaning
We include a custom bottle brush for hand-washing the deep chambers, or just throw the whole thing in the dishwasher.
04
Temperature Influence
When running hot and cold side by side, some temperature influence over time is normal. Designed for active daily use.
The Splitflask Advantage
| Feature | Regular Tumbler | Splitflask |
|---|---|---|
| Drink Capacity | 1 Drink | 2 Drinks |
| Dual Temp Control | YES | |
| Carry Profile | Cluttered | Streamlined |
| Dishwasher Safe | Sometimes | 100% Yes |
Swipe to compare
Built for real-life use—not sitting untouched for hours.
Every product has tradeoffs. Here's how to think about this one:
-
It replaces two cups → so it's bigger
-
It takes one use to get right → then it's easy
-
It's built for daily use → not extreme insulation
— A candid note from our founders
What users are saying
Verified Reviews
Game changer
"I never leave the house without my coffee and my water. This has saved me from so many spills in the car."
— Jessica W.
Perfect
"Build quality is amazing. The matte finish feels premium and the insulation is top notch. Highly recommend."
— David L.
Doesn't leak
"I was skeptical about the lid but if you align it like the instructions say, it's rock solid. No leaks in my gym bag."
— Ryan K.
Frequently Asked Questions
Does it leak?
When the lid is aligned correctly and fully closed, it seals both sides securely. Multiple reviewers specifically called out that it does not leak when used properly.
Is it hard to clean?
A few customers mentioned deep cleaning is easier with a brush or by using the dishwasher.
Is it dishwasher safe?
Yes, and several reviews mention that as a major plus.
Will it fit in my cup holder?
Many customers mention that it fits in their car cup holder.
Do the drinks mix together?
No. The chambers are physically separated by a stainless steel wall and the lid features dual silicone seals to keep liquids and flavors 100% isolated.
How long does it keep temperature?
For real-life use—like your commute or workout—both sides stay comfortably drinkable. Because hot and cold are side by side, performance isn't the same as single-purpose thermoses.
Can I use hot and cold at the same time?
Yes. That’s exactly what it was made for, and many customers specifically use it for coffee and water.
Why people switch
Not because it's a better tumbler.
Because it replaces two.
Stop carrying two drinks.
One cup. Two drinks. Done. Join thousands of happy commuters and athletes.
Let's Do It
Free Shipping
30-Day Returns
Lifetime Warranty