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Ultra-Slim Self Adhesive Credit Card Wallet for Smartphones, Black

4.4 4.4 out of 5 stars 5,139 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Cell Phone Adhesive Card Holders by CardNinja

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Classic
Black

Purchase options and add-ons

Brand CardNinja
Color Black
Material Fabric
Style Classic
Pattern Solid

About this item

  • CardNinja can store up to 8 cards AND cash using a durable elastic fabric (driver’s license, gym card, train pass)
  • Using 3M adhesive, CardNinja securely attaches to the back of your device. It removes cleanly too!
  • Compatible with the following smartphones: iPhone 11 / 11 Pro / 11 Pro Max / XS / XS Max / XR / X / 8 / 8 Plus / 7 / 7 Plus / 6 / 6 Plus / 5 / 5s / 5c / 4 / 4s, Samsung Galaxy S6 / S5 / S4 / S3, Galaxy Note 5 / 4 / 3 / 2 / 1, LG G3 / G2 / Optimus series, Nexus 6 / 5 / 4, HTC M8 / EVO / Desire / Sense, iPod Touch, Sony Xperia and much more! Works with nearly ANY phone case including: Otterbox, Lifeproof, CaseMate, Belkin, Speck, Apple and more
  • Reviewed by the biggest names in tech: CNET, The New York Times, Macworld, USA Today, The Wall Street Journal, The Next Web, and Cult of Mac
  • The Original! CardNinja is the world’s first PATENTED adhesive smartphone wallet. Designed in California
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$18.99
Get it as soon as Sunday, Mar 17
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CardNinja Ultra-Slim Self Adhesive Credit Card Wallet for Smartphones, Black
CardNinja Ultra-Slim Self Adhesive Credit Card Wallet for Smartphones, Black
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Price$18.99$8.99-38% $7.99
List:$12.99
$13.99$7.99-25% $14.99
List:$19.99
Delivery
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Get it as soon as Sunday, Mar 17
Customer Ratings
Adhesion
4.6
4.4
4.8
4.6
4.6
4.4
Easy to remove
4.1
4.0
4.7
4.0
4.1
4.0
Stretch
3.9
4.6
4.8
4.5
4.5
Durability
4.1
4.4
4.2
4.3
Sold By
EverydaySellers
Puxnoin Direct
Fulgamo Inc.
Sinjimoru Inc
Sinjimoru Inc
Lifestyle Designs Inc

From the manufacturer


Toss your Wallet!

Turn your smartphone into a Ninja Wallet. The CardNinja sticks onto the back of your phone or phone case, just like a sticker. Insert credit cards, debit cards, licenses, IDs or cash. Toss your old bulky wallet. You can flip it over and nothing falls out. You can use the Ninja wallet with your iPhone, Android, Windows or BlackBerry smartphone.

CardNinja by cubi

Carry a few cards and cash for a jog or a night out

Smartphone Wallet

  • Holds up to 8 cards or cash. Even ear buds!
  • Peel and stick. No damage on removal.
  • Just 2.5 mm thin.
  • Works with most cases.
  • It's secure. Items won't fall out (even if you flip it over).
  • Great for the gym, shopping, bars, and everyday use.
  • Perfect for men, women, and even kids.
  • Holds credit/debit cards, drivers license, student ID, some cash, and more.

The Original Stick-On Wallet

Compatible

Works with iPhones, Androids and Windows phones. Can also attach to nearly any case. Otterbox, Lifeproof, Belkin, Speck, Apple and more.

Simple

Just peel and stick. Attaches easily with 3M tape. Attaches securely, removes cleanly.

Perfect

Carry credit cards, driver's license, school ID, gym pass, cash and more. Up to 8 cards.

What's in the box

  • use
  • Looking for specific info?

    Product information

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here

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    CardNinja Ultra-Slim Self Adhesive Credit Card Wallet for Smartphones, Black


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    Product Description

    The patented CardNinja is the ultimate smartphone accessory! As simply as peeling a sticker, CardNinja attaches to your phone or case using high strength adhesive and won't come off until you want it to. And you can remove it cleanly without leaving any residue! It also holds its contents super tight: nothing will come out of your CardNinja, even if you flip your phone over and shake it! Whether you carry a bunch of cards with you for work, or just a few to run errands, the CardNinja adapts to you. It's made from a special strong and resilient spandex style material so it stretches to accommodate several cards, but shrinks back down when empty or only carrying a card or two. At only 2.5mm thin, the CardNinja is discreet. Like a Ninja! Made from reinforced elastic material, it is designed to withstand being put into your pocket or purse day after day without wearing. It's also designed to resist tearing from repeatedly inserting and removing your credit cards. The CardNinja is perfect for quick trips, hiking, biking, the gym or a night on the town! Toss your bulky wallet and switch to CardNinja for everyday use!

    Customer reviews

    4.4 out of 5 stars
    4.4 out of 5
    5,139 global ratings

    Customers say

    Customers like the ease of installation using the magnetic strip. They mention it's easy to stick to the back of their phone and holds multiple cards firmly in place. They appreciate the tight material that retains elasticity even when stretched. Customers are also satisfied with the magnet strength, card holder, and performance. However, some customers differ on value and elasticity.

    AI-generated from the text of customer reviews

    748 customers mention581 positive167 negative

    Customers like the quality of the wallet. They mention that it's durable, reliable, and safe. It exceeds their expectations and is perfect for their needs. The material feels like spandex, and it'll last for a long time.

    "...I drop my phone A LOT and the cards never flew out...." Read more

    "...card holder they make, because of its combination of versatility and durability. Awesome is an understatement...." Read more

    "...Pros:- Simple, easy. Peel and stick.- Looks pretty good and high-quality...." Read more

    "I have bought this multiple times. It is perfect for my needs. I want to carry cards and phone all in one...." Read more

    710 customers mention574 positive136 negative

    Customers like the card holder. They say it holds 2 cards securely, comfortably fits several cards, and cash with no issues whatsoever. It will hold a ton of cards, but any more than 3 will make it bulge out from their pocket. The leather case, they love how it expands to fit more than 3, and it has never lost its ability to hold cards in place. They also say it helps organize or lighten their pockets and streamline cashing out at the store.

    "...I gave "security features" 5 stars because it held cards securely no matter how many I put in/took out for well over a year...." Read more

    "...Attachment is solid.- Carried my driver's license at the airport like a champ and then later to the hotel gym with my door key...." Read more

    "...The structure has not been compromised at all. Putting money in it and then pulling on the material a few times a day will weaken it faster...." Read more

    "...It holds more cards and it holds up indefinitely, at this point!..." Read more

    542 customers mention427 positive115 negative

    Customers like the magnet strength of the wallet. They mention that the backing thickness is right, the adhesion is good, and the fabric is cool. The mount holds the phone up well, and it hasn't lost its grip at all. The card wallet makes it easier for them to hold onto, and they do not fall out when their phone is rotated or. Overall, they really like this product.

    "...stretched-out, the corners haven't peeled up, there's no loose adhesive debris rolling out at the edges, and the fabric (I have original black) does..." Read more

    "...Material has held up well or no holes at least. Not even a hint of adhesive failure...." Read more

    "...The adhesive is extremely strong and it's perfect for my Clipper card and occasionally a debit card...." Read more

    "...time, there is a corner that doesn’t stick anymore, but the rest of it is stuck so well that it’s still firm enough to trust with the eight cards it..." Read more

    412 customers mention389 positive23 negative

    Customers like the performance of the wallet. They say it works well, has amazing quality, and is perfect for going out. Some say it's bulky, but it works great for going. Some customers also say it still works in most iPhone holders.

    "...I have had zero problems while using it properly...." Read more

    "...-Functionality is superb-Adds grip to my iPhone-All my essentials in one place-Slightly expandableCons..." Read more

    "...It works great and I've saved precious ounces. The best thing is now I have all my important stuff in one thing...." Read more

    "...runners on the inside to keep things in place, but it is still very functional and exceeds my expectations." Read more

    258 customers mention191 positive67 negative

    Customers like the fit of the wallet. For example, they mention it's made of a very tight material that retains elasticity even when stretched, the size is perfect, and it doesn't interfere with their camera lens. The material is strong and it'd be perfect for their Clipper card and occasionally a debit card. They also appreciate the combination of versatility and durability, and the stretchy material, so it is easy to slide several cards in for safekeeping.

    "...This is the best card holder they make, because of its combination of versatility and durability. Awesome is an understatement...." Read more

    "...The adhesive is extremely strong and it's perfect for my Clipper card and occasionally a debit card...." Read more

    "...The only downside I see from it is that it is a little long and takes a little away from the aesthetic of my iPhone's case...." Read more

    "...credit cards, my DL, and my medical insurance card - the stretchy Lycra keeps a snug fit..." Read more

    179 customers mention179 positive0 negative

    Customers find the installation of the wallet to be easy. They mention that it is simple, easy to put on, and can hold many cards/cash. The wallet is sturdy and convenient, and it saves time and a lot of frustration. It can be reapplied without too much fuss if you get a new phone.

    "...It it very easy to install for the average person. It will last you even longer than it lasted me if you carry less CC's and cash on you than I do...." Read more

    "...Pros:- Simple, easy. Peel and stick.- Looks pretty good and high-quality...." Read more

    "...So I only keep my essentials.Overall, it's easy to use; as in retrieving money and cards isn't hard...." Read more

    "...Very convenient to have my cards all in the one place I will never lose them." Read more

    369 customers mention202 positive167 negative

    Customers are mixed about the elasticity of the wallet. Some mention that its stretchy material can hold 1 or 8 cards, helps to minimize stretching, and is very strong. Others say that the stretchy factor wears off after a little while, and the card holder began stretching out after the first few days.

    "...Out the box the spandex comes super tight yet flexible and reliably strong...." Read more

    "...After about a year and a half it started getting a tiny bit stretched-out, spilling a card or two when dropped from height, but I believe this is my..." Read more

    "...to be stiff and rigid, but to my pleasant surprise, it was soft and expandable. This allows me to have a lot better grip on my phone...." Read more

    "...when you use it (see photo), which makes me worry that it will get overstretched easily (especially when you are putting earbuds in there) and loose..." Read more

    166 customers mention107 positive59 negative

    Customers are mixed about the value of the wireless accessory. Some mention it's worth every penny, while others say it'd be a huge waste of money. Some say it is not an awesome long-term wallet replacement unless you live very lean in terms of the number of cards.

    "...Awesome is an understatement. $8 bucks is a good price point, and worth what this product provides. Enjoy." Read more

    "...It feels overpriced but I want the name brand quality guarantee so, I will purchase this with my next more durable phone case...." Read more

    "...This was at a good price and figured worth a try.Pros:- Simple, easy. Peel and stick.- Looks pretty good and high-quality...." Read more

    "...replacement and is only about a month older i would say the value is excellent...." Read more

    With a few important cards and some personal responsibility....it works great!
    5 Stars
    With a few important cards and some personal responsibility....it works great!
    ****Some reviews stressed security issues.I get it, if you lose your phone with items in the CardNinja, yes, you are now vulnerable. I understand people getting upset about that but to me that is more of a responsibility issue. Losing your purse or wallet could have the same outcome but blaming the purse/wallet makers doesn't seem appropriate. I feel the same way about the loosing my phone with the CardNinja attached. I put it on there and it's my responsibility to keep up it. Also, fraud and theft protection on your cards are always a good idea.****I read reviews about it tearing up the phone backs.Well, it is designed to stay on securely. If it could be pulled off easily, then what's the point. The adhesive is insanely sticky strong. Once it barely touches the phone, it's already sticking. So make sure you have lined up exactly before you start to lower it for permanent position. We made that mistake and had to replace it. We used a little Goo Gone and elbow grease and the remaining glue rolled up, then we just peel it off. No damage done.It says it will hold eight cards. If you use that many every single day, it will not last as long as people are expecting it to. That will stretch out the material and cause strain on the adhesive, which will start detaching slowly.It seems to be mm smaller than the size of c/cards. Which is smart, that feature along with the stretchy material is what makes it fit snug around the cards.My husband has had his CardNinja for a few months. Well since October, it's February. He keeps three cards in it and that's about it. Sometimes he will place a bill in it right before he walks into the store. The structure has not been compromised at all. Putting money in it and then pulling on the material a few times a day will weaken it faster.So does it work as directed, not entirely. However, using it like my husband to keep up with, c/card, and a few i.d. cards, along with a little responsibility, it works fine.The photos are of me placing mine on today.
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    Top reviews from the United States

    Reviewed in the United States on November 11, 2019
    Style: ClassicColor: BlackVerified Purchase
    Reviewed in the United States on March 3, 2019
    Style: ClassicColor: BlackVerified Purchase
    Reviewed in the United States on August 24, 2016
    Customer image
    K V
    4.0 out of 5 stars Perfect for Airport Security
    Reviewed in the United States on August 24, 2016
    Another reviewer said this is like "a stretchy pocket on your phone" and that's spot on.

    I was looking for something unobtrusive and simple I could stick on my phone to use at the airport (to keep my convenient digital boarding pass and annoyingly-still-physical ID together for that security checkpoint). This was at a good price and figured worth a try.

    Pros:
    - Simple, easy. Peel and stick.
    - Looks pretty good and high-quality. Backing is leather-like and then the 'pocket' material is a soft, stretchy material like you'd expect on athletic gear. Attachment is solid.
    - Carried my driver's license at the airport like a champ and then later to the hotel gym with my door key.

    Cons:
    - I'm not sure why, but I was under the impression that this was a removable and reusable phone attachment. It's not. It's a firm adhesive (that, yes, you can review and maybeeee get to stick to something else without adding more adhesive, but it's meant to be permanent). I use a magnet on the back of my phone case to stick to another magnet on my car dash, and using this meant covering it up (cutting the magnet strength in half).
    - Because the pocket material is soft and silky, it makes my phone just a teeny bit slippier to hold.
    - The material billows a little bit when you use it (see photo), which makes me worry that it will get overstretched easily (especially when you are putting earbuds in there) and loose its hold. I'll keep you posted.
    Images in this review
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    Customer imageCustomer image
    17 people found this helpful
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    Top reviews from other countries

    Translate all reviews to English
    Gustavo C.
    5.0 out of 5 stars Útil y conveniente.
    Reviewed in Mexico on November 1, 2022
    Cliente de Amazon
    5.0 out of 5 stars Buena adhesivo
    Reviewed in Mexico on September 22, 2020
    Tom D.
    5.0 out of 5 stars Great product
    Reviewed in Canada on March 13, 2020
    Cota
    5.0 out of 5 stars Lo recomiendo...
    Reviewed in Mexico on July 26, 2019
    LDM
    5.0 out of 5 stars Wallet replacement? Maybe
    Reviewed in India on August 23, 2018
    Style: ClassicColor: BlackVerified Purchase
    One person found this helpful
    Report