Phone Case with Storage

★ The original expandable storage case

The phone case with storage that holds more than cards.

Most phone cases with storage stop at a card slot. The Ninja Labs Flex Pouch has a patented expandable pocket that holds cards, cash, AirPods, keys, and more — all at once.

Shop the Flex Pouch — $78
U.S. Patented Holds more than a wallet Designed in LA Ships worldwide
Ninja Labs Flex Pouch phone case with storage pocket holding cards and accessories
See the storage in action

Stretches to store. Snaps back to hold.

The expandable pocket opens up to fit your everyday essentials, then contracts to keep everything secure — no flap, no bulky wallet, no extra bag.

Phone case with storage pocket stretching to hold everyday items
Load it upThe pocket stretches to fit cards, cash, AirPods, keys and more.
Expandable phone case storage pouch holding items securely and retracting
It holds tightMemory silicone contracts around your items and snaps back when empty.
What fits inside

One pocket. Everything you carry.

A card-slot case holds 2–3 cards. This phone case with storage holds whatever your day needs — one item at a time, or all of them together.

💳

Cards & ID

Driver's license, credit cards, transit passes — several at once.

🎧

AirPods

Your AirPods case fits inside, and the loaded pouch doubles as a movie stand.

🔑

Car Key Fob

Bulky fobs that fit nowhere else. Skip sharp house keys — they can tear silicone.

💵

Cash

Folded bills and coins, not just flat cards.

💄

Lip Balm & Makeup

Chapstick, compacts, and small cosmetics tuck in easily.

💊

Daily Essentials

Lighters, medicine, earbuds — the silicone adapts to any shape.

How it works

Storage built into the case itself.

No add-ons, no attachments. The pocket is permanently part of the case, made from proprietary memory silicone.

01

Stretch it open

The pocket expands to double its size to fit whatever you need to carry.

02

Drop your stuff in

Cards, AirPods, keys, cash, makeup — one at a time or all together.

03

It holds tight

The silicone contracts to grip your items, and stays slim when empty.

10K+
Stretch cycles tested
90%
Elasticity retained
#1
Patented storage pouch case
How it compares

Not all phone cases with storage are equal.

Card slots and wallet cases only hold flat cards. The Flex Pouch holds everything else too.

Storage feature Card slot case Wallet case Flex Pouch®
Holds cards ✓ ✓ ✓
Holds cash ✗ ~ ✓
Holds AirPods ✗ ✗ ✓
Holds keys & fobs ✗ ✗ ✓
Holds makeup & odd shapes ✗ ✗ ✓
Multiple items at once ✗ ~ ✓
Stays slim when empty ✓ ✗ ✓
Patented design ✗ ✗ ✓
Common questions

Phone case with storage FAQ

The Ninja Labs Flex Pouch is a phone case with a built-in expandable storage pocket. Unlike card-slot cases that only hold flat cards, its patented stretch pocket holds cards, cash, AirPods, keys, lip balm, and more — all at once.
The pouch stretches to hold multiple items at once — for example an AirPods case, a few cards, and a car key fob together. The memory silicone expands to fit and contracts to hold everything tight.
No. In over 10,000 stretch cycles the Flex Pouch retained over 90% of its original elasticity. The memory silicone returns to its original shape after every use. Avoid sharp items like house keys, which can cause tears.
The Flex Pouch is available for iPhone 13, 14, 15, 16, and 17 — including Pro, Pro Max, Plus, and e variants.
The Flex Pouch is $78 USD, sold exclusively at ninjalabs.com. Worldwide shipping is $10 flat with 7–10 day delivery and 30-day returns.

The phone case with storage that finally holds it all.

Patented expandable pocket. Holds cards, AirPods, keys, cash and more. Designed in Los Angeles.

Shop the Flex Pouch — $78