PATENTED · CREATED BY A NICU NURSE & MOM OF 3

Two Drinks, One Cup.

I’mThe dual-chamber insulated tumbler that carries your coffee and your water. Hot stays hot. Cold stays cold. Nothing mixes. Nothing spills.

Shop the 30oz Splitflask

★ 4.7 from 1000+ verified reviews · 30,000+ sold

Keeps drinks separate
Leakproof dual chamber
Fits most cup holders

As Seen On:

Because carrying two drinks is annoying.

Coffee in one hand. Water in the other. Now open the door. Grab your phone. Find your keys. Something always spills — usually on you. Splitflask ends the juggle. Two fully separate, vacuum-insulated chambers in one cup-holder-friendly tumbler. Your iced water never tastes like your latte, and your hands are finally free to do literally anything else.

Use Cases

The Split Routine

Built for the pairings people actually carry. Coffee and water. Pre-workout and hydration. Hot on one side, cold on the other.

One cup. Every routine.

Splitflask is built around routines that usually require two separate bottles. The point is not novelty. It is eliminating the daily tradeoff between convenience and carrying what you actually want to drink.

warm

Coffee + Water

Caffeinated and hydrated on the same commute. Your dentist and your barista, finally at peace.

cool

Pre + Post Workout

Energy for the lift in one chamber, recovery in the other. One hand free for your phone, because we know.

warm

Electrolytes + Water

The two-drink protocol, simplified. One cup that keeps up with your goals. Ideal for breastfeeding and GLP-1.

cool

Mom Mode

Baby's drink on one side, yours on the other — 100% backwash-free. You're welcome.

BEST SELLER

Your Coffee. Your Water. One Hand.

Best Seller

Splitflask® 30oz Dual-Chamber Tumbler

$49.95

Two drinks, one hand — 15oz + 15oz fully separate chambers
Actually leakproof — dual-sealed lid; flip it upside down, we dare you
Dishwasher safe — top rack, no weird parts, no excuses
Cup holder friendly — tapered base fits standard car cup holders

4.7/5 (1000+)

Verified Reviews

Lifetime Warranty

Free Shipping over $50

30-Day Returns

This isn’t for everyone.

If you want a tumbler that keeps ice frozen until next spring — this isn't it. If you want a tiny cup that disappears into your pocket — this isn't it.

But if you leave the house every single day juggling two drinks, two bottles, and zero free hands — this was built for exactly you.

It's not a better tumbler. It's a better solution.

So if you’re tired of carrying two drinks every time you leave the house... we've got you covered.

30,000 people stopped juggling.

Created by a NICU nurse
After years of enduring 12 hour shifts juggling multiple drinks, something had to change.
Zero Flavor Crossover
Independent chambers mean your coffee never tastes like your lemon water.
Real-Life Ergonomics
Designed to fit standard cup holders and feel balanced in your hand.
Leak-Proof Gaskets
Dual-sealed lids ensure no messy spills in your bag or car.

"This is SUCH a great idea. I did not enjoy carrying around 2 insulated cups for hot and cold. I was dropping them all the time. I put this Splitflask in a carrying sling, and now I don't even have to think about it. And this cup can handle some abuse too."

— Awesome idea, Great build quality. Written By: Tyler Swope

"No leakage, no mixing. A lot easier to set up than I expected. Kept two drinks cold on a hot day. Color matches the photos. Would absolutely buy again, but I don’t expect to need to, as it seems very durable."

— Worth the price. Written By: Casey N.

"I had my eye on this cup for a while and I finally took the plunge and excited I did! I love having multiple drinks but can usually only carry one and I love to put them in my bag. I’m a mom of 4 kids and my hands need to be free. I used it this morning for hot coffee and cold ice water and the coffee stayed hot for about 6-7 hours and the it held the ice for about 8 (I dumped it out to replace the drink so it could have went longer!). You also have to factor in I kept opening and closing to drink my coffee and I add cold milk. I would say that’s pretty amazing! Now I have two cold drinks in it (strawberry margarita and regular margarita ha ha). I soft tossed it to my bed because I was doing laundry and my hands were full and no leakage at all! I love this cup and I’ve already told a few people about it!"

— Pretty Life changing. Written By: Tiffany G.

STOP CARRYING TWO dRINKS

One cup. Two chambers. Zero juggling. Join 30,000+ moms, nurses, commuters, and athletes who freed up a hand.

Get Your Splitflask →