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JustinCASE
Getting there meets being there

Stop choosing between a cooler
and a carry-on

You shouldn't arrive to warm drinks and a damp change of clothes. The JustinCASE keeps your gear dry on the way and your drinks cold when you get there. One bag that does the job of three.

Build yours for $299See how it converts
★★★★★5.0· 96 reviews100-day returns94.5-year warranty
JustinCASE Convertible Cooler Backpack
COOLERBACKPACKCARRY-ONDRY BAGONE CASECOOLERBACKPACKCARRY-ONDRY BAGONE CASE
Cooler packed with bottles on ice
Cold · up to 11 lbs
Dry storage packed with folded clothes
Dry · clothes & gear
The Dual-Mode Shelf™

One case. Three ways to pack.

Cold and dry, at the same time.

Install the shelf with the JC logo upright. Pack chilled drinks and ice above, up to 11 lbs total, and keep clothes and gear dry below.

Read the setup and packing guide
Cold or dry. You decide.

The first and only convertible backpack

All cooler, all dry storage, or both at the same time. The patent-pending Dual-Mode Shelf is included with every JustinCASE and lets you split the interior however the day demands. No extra gear, no tradeoffs.

See the JustinCASE
The three-bag problem

One bag instead of three

The cooler in one hand, the duffel over a shoulder, the backpack on top of it all. Every outing starts with a load-out. The JustinCASE ends it. A leakproof liner holds up to 30 cans and a bag of ice, the patent-pending Dual-Mode Shelf splits the interior into cold and dry however you decide, and everything rides on your back with your hands free.

Build yours for $299

30 cans + ice

Capacity

3.1 lbs

Weight

Fits overhead bins

Carry-on

94.5 years

Warranty

Made for your kind of day

One bag. However you get out there.

On the water

On the water

Cold drinks, dry layers, hands free on the dock.

Beach days

Beach days

One bag for the whole crew: snacks cold, towels dry.

Travel light

Travel light

A carry-on cooler out, dry clothes in. No second bag.

Cooler duty

Cooler duty

30 cans and a bag of ice, ready for game day.

Explore the bag

Every detail earns its place

Tap the points to explore.

JustinCASE convertible backpack cooler shown from the front, side, and back
The JC guarantee

Try it for 100 days.
Keep it for 94.5 years.

Travel with it. Do your best to find its limits. If it isn't right, send it back within 100 days for a full refund. No forms, no hoops. And if it ever fails on a defect, the 94.5-year warranty has you covered.

Build yours

100

day refund window

94.5

year warranty

3

packing modes

Free

contiguous US shipping

Real trips, real results

Loved on boats, planes,
and every beach in between

5.0
★★★★★

96 reviews

★★★★★

Has become our go to cooler!

“We started using the justincase backpack cooler on our private airplane trips and it has now become an essential item of travel. Traveling with young kids means having snacks is a must and this cooler allows for both cold and dry storage making it an all in one solution for us.”

Leslie Frese Malone

Verified buyer

★★★★★

Awesome Product for the boat or while traveling

“We were in the market for a backpack style cooler and ironically we came across the JustinCase Cooler at the perfect time. This is now our go-to cooler for the boat and our Camper Van. Very well designed and rugged. Easy to load up cold or dry items and the bag stays in place while boating or riding in our vehicle. We both love this new bag!”

The Reel 850

Verified buyer

★★★★★

Perfect for the beach

“Great beach bag! Perfect for when you want cold drinks but also want your essentials to stay dry.”

Reel Coastal Fishing

Verified buyer

Read all 96 reviews
Real people · real adventure

See it in the wild

Real owners, real trips: boats, beaches, backyards, and the trail. Tap to watch with sound.

A man carrying the JustinCASE on his back at the water's edge
Our story

Born from one soggy carry-on

Our founder kept reaching for the same popular backpack cooler: clothes for the trip out, cold drinks at the destination. He kept arriving to the same problem: warm drinks, and a damp change of clothes.

Years of that inconvenience became the JustinCASE: a single case engineered to keep your drinks cold and your gear dry at the same time. So you come home with good memories, not wet laundry.

“We didn't think the bag for getting there and the bag for being there had to be two different bags.”
Good to know

Questions, answered

What are the dimensions?+

The 2026 catalog lists the 2nd Gen JustinCASE at 21 inches high, 13.35 inches wide, and 8.35 inches deep. Check your airline's current size and weight limits before flying, including how the bag fits when packed.

How long does it keep ice cold?+

The owner's guide describes 24+ hours of ice retention. For best performance, start with chilled contents and a 2:1 ratio of ice to contents. Actual results depend on packing, outside temperature, and how often you open the cooler.

Can I take it on a plane?+

The JustinCASE is designed for standard overhead bins. Check your airline's size and weight limits before flying, and pack it as dry storage for the trip. Convert it to a cooler when you arrive.

How does it keep clothes dry and drinks cold at the same time?+

A patent-pending internal liner separates the cold compartment from dry storage. Install the Dual-Mode Shelf™ with the JC logo upright: cold drinks and ice go above, up to 11 lbs total, and dry gear goes below.

How durable is it?+

Built to take a beating at just over 3 lbs, easy to carry on daily trips. Backed by a 94.5-year warranty against defects in materials or craftsmanship.

What if it isn't right for me?+

Try it for 100 days. If it isn't right, send it back for a full refund. No forms, no hoops. We've offered this since day one.

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Trusted by specialty retailers

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One bag.
Every adventure.

Cold drinks, dry gear, and nothing left behind. Pick your colorway and go.

Build yours for $299
The JustinCASE in three colorways on a picnic table