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FourFlow™
THE ALL-IN-ONE TRAVEL ESSENTIAL

Carry 4 toiletries in the space of 1 bottle.

4.9(2,847 reviews)
TSA Approved
Leak-proof Silicone
Refillable Forever
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$34.99 $44.99
1
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30-day returns
2-year guarantee
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As seen in TRAVEL+CO Wanderlust PACK LIGHT NOMAD Mag The Carry-On
WHY FOURFLOW

Every feature earns its place.

TSA-Approved Size

Four 25ml chambers — under the 100ml carry-on limit every time.

Zero-Leak Guarantee

Food-grade silicone seals. Survives checked bags, cabin pressure, and gym lockers.

Refill in 60 Seconds

Wide-mouth top-fill. Twist open, pour, twist closed. No funnels, no mess.

4 Products, 1 Bottle

Shampoo, conditioner, face wash, and lotion — dial to select, press to dispense.

Ships in 2 Days

Order by 2pm and it ships same day. Free shipping on orders over $50.

4.9★ from 12k Travelers

Real reviews from real frequent flyers who've put it through the ringer.

PHOTO · CLUTTERED TOILETRY BAG
THE PROBLEM

Travel shouldn't be this messy.

Four bulky bottleseat half your toiletry bag before you've packed a thing.

Leaks ruin everything— shampoo all over your clothes at 35,000 feet.

Security holds you up— oversized bottles get pulled and tossed.

It's chaos in there— digging for the right bottle every single morning.

FourFlow solves all of it — one bottle, four products, zero leaks.
HOW IT WORKS

Four products. One pump. Zero confusion.

STEP 01
FILLING CHAMBERS

Fill Each Chamber

Twist open each of the four independent chambers and fill with your liquids — up to 25ml each.

STEP 02
TWIST DIAL

Twist to Select

Rotate the dial to the product you want. The internal valve aligns to that chamber only.

STEP 03
PRESS PUMP

Press and Dispense

Press the pump. Out comes exactly what you selected — nothing else mixes.

STEP 04
PACKED AND SEALED

Seal and Pack

Snap the lid closed. The silicone seal holds under cabin pressure. Pack and go.

THE DETAILS

Built to obsessive standards.

01· THE SEAL

Leak-proof down to the molecule.

Each chamber is sealed with a dual-wall silicone gasket.

Dual-wall silicone gasketSurvives 500+ pressurization cyclesZero leaks across 50,000+ units sold
PHOTO · SEAL DETAIL
02· THE DIAL

Precision routing, zero cross-contamination.

The center dial mechanically routes the pump to one chamber at a time.

Mechanical isolation valve4 independent chambersZero cross-contamination guaranteed
PHOTO · DIAL CLOSE-UP
03· THE FILL

Top-fill in under 60 seconds.

Each chamber twists open from the top. Wide-mouth opening fits any bottle.

Wide-mouth top-fill opening25ml per chamber (TSA max)Refill in under 60 seconds
PHOTO · REFILLING
THE DIFFERENCE

Before FourFlow vs. After FourFlow

BEFORE Carrying 4 separate bottles
PHOTO · 4 BOTTLES SCATTERED
4 separate bottles spilling in your bag
Always over the TSA 100ml limit
Shampoo all over your clothes
Digging for the right bottle every morning
AFTER One FourFlow dispenser
PHOTO · FOURFLOW IN HAND
One compact bottle does it all
Exactly 25ml per chamber — TSA perfect
Sealed tight — bone dry every time
Twist the dial, press, done
REAL QUESTIONS

We've heard the doubts. Here are the facts.

Will it actually leak in my checked bag?

We've tested it extensively. In two years and 50,000+ units, we've had zero documented leaks from sealed chambers.

Is it really TSA-approved?

Each chamber holds exactly 25ml — under the TSA 100ml maximum. The whole bottle fits in a single 1-quart bag slot.

Is refilling actually easy?

Twist, pour, twist. Each chamber takes under 15 seconds. Wide-mouth opening works with any bottle including salon jugs.

Won't the products mix?

No. The mechanical isolation valve routes the pump to exactly one chamber at a time. Nothing else moves.

LOVED BY TRAVELERS

12,000+ trips packed lighter — and counting.

4.9
2,847 reviews
5
4
3
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"Finally made it through TSA without unpacking my whole bag."

Maya R.
Verified buyer
VERIFIED

"I travel for work every week. This replaced a messy ziplock of mini bottles."

Daniel K.
Verified buyer
VERIFIED

"Looks way more premium than I expected. Refilling is stupid easy."

Priya S.
Verified buyer
VERIFIED

"Skeptical about leaks but it survived a checked bag getting thrown around. Bone dry inside."

Tom B.
Verified buyer
VERIFIED

"Packed for two weeks in one carry-on thanks to this. All sorted, all sealed."

Elena V.
Verified buyer
VERIFIED

"The build quality is the surprise here. Feels like an Apple product. Twist, press, done."

Marcus L.
Verified buyer
VERIFIED
IN THE WILD

FourFlow in the real world.

CARRY-ON LUGGAGE
AIRPORT SECURITY
HOTEL BATHROOM
GYM BAG
BEACH VACATION
30-Day Guarantee
Full refund if you're not happy
30-Day Guarantee
Full refund if you're not happy
30-Day Guarantee
Full refund if you're not happy
30-Day Guarantee
Full refund if you're not happy
OUR PROMISE

Pack with total confidence.

We back every FourFlow with a 2-year leak-proof guarantee and 30-day no-questions-asked returns.

Add to cart — shop now

30-day money-back guarantee · Free shipping over $50 · Ships within 24 hours

FAQ

Everything you need to know.

Each of the four chambers holds 25ml — under the TSA 100ml carry-on maximum.
Yes — shampoo, conditioner, face wash, body wash, lotion, serum, oil.
Rinse each chamber with warm water, twist open and let air dry.
No. The silicone seal has been tested across 500+ pressurization cycles with zero failures.
Standard shipping is 3-5 business days. Orders placed before 2pm ship same day on business days.
30 days, no questions asked. Contact us for a prepaid return label and a full refund.
FourFlow