About Museum Leather
Social Products Award 2025
This is Japan's first award system that highlights excellent "social products" that contribute to the realization of a sustainable society, evaluating both their social and commercial value.
Light as air
Hitoe® Fold Aria - Museum -
Earn $14.00 in store credit
The Hitoe® Fold series will be updated with new specifications to commemorate its 5th anniversary in 2025.
Details of the improvements can be found at the following link.
New Aria & Less – Slimmer, More Beautiful
With this update, the current model is available at a special price while supplies last.
The release date for the new model is yet to be determined.
concept
Light and beautiful, like air
"Aria" — Italian for "air," and a beautifully melodic solo song.
As the name suggests, this wallet is so light, thin, and beautiful that you'll forget it's even there.
About Museum Calf
Artistic Beauty of Rich Gradation
Museum Calf is a leather inspired by the marbled patterns of natural stone.
True to its name, it is created using an artistic dyeing method in which craftsmen apply multiple layers of color by hand, resulting in beautiful tonal variations.
The finish preserves the delicate texture unique to calf leather, and the polished surface emits a refined luster that deepens with use.
technology
Innovative ideas and the exquisite skills of craftsmen
| Patented technology inner hook
This patented technology uses the card itself as the fastener, a completely new concept. It eliminates the need for any metal fittings, resulting in a thin, flat design. Since the wallet won't open if the card is opened incorrectly, there's no worry of coins spilling out.
| Extremely thin Hitoe® structure
The "Hitoe® structure" allows you to arrange cards, coins, and banknotes without overlapping them, achieving an astonishingly thin design without compromising storage capacity. The overlapping of leather is also limited to a maximum of five layers.
Even with 10 banknotes, 15 coins, and 6 cards stored inside, the thickness is only 12mm * .
* Thickest part excluding the coin pocket
| The finest, unparalleled tailoring
"Double-faced-jitate" is a technique that uses two pieces of leather bonded together to create a smooth finish that resembles a single piece of leather. This technique, which combines durability and elegance, embodies the exquisite and skilled craftsmanship of artisans.
| Slip-free design (patent pending)
Inserting and removing cards is always smooth, yet they are less likely to accidentally fall out.
design
The harmony of beauty and function guided by the laws of nature.
| Ultimate Functional Beauty
"Perfection is a state that cannot be further refined." — Antoine de Saint-Exupéry
Through sophisticated design and exquisite craftsmanship, we have pursued ultimate thinness, lightness, and functional beauty .
| The laws of beauty created by nature
The beautiful harmony of the natural world, as depicted by the Fibonacci sequence, has been incorporated into the proportions of this wallet.
Each time you pick it up, you'll feel its harmonious beauty resonate deeply within your heart.
| Aesthetics of detail
Delicate stitching, carefully polished leather edges, and thin lines along the rim.
The aesthetic sensibility evident in the details gives this wallet a profound presence.
| Details for thinness
The leather pieces were sewn together on the outside, minimizing overlap.
These details are faithful to the ideal we are striving for.
| Beauty achieved solely through leather
There are no metal fittings or flaps. It's a simple design that just uses leather to hold everything in place. Because there's nothing extra to it, it won't snag on anything, and you can carry it smartly wherever you go.
Durable and beautiful for a long time
No metal parts were used, and the stitching was placed in locations that are less likely to wear out.
The easily damaged corners are reinforced with extra layers of leather to improve durability.
Furthermore, the seams are extremely thin, making it less likely to lose its shape even when placed in a pocket.
Ease of use
Make your daily routines simpler.
One-action comfort
Simply bend your wallet into a "V" shape. You can instantly take out both banknotes and cards.
Paying at the register is smooth and smart.
| Without folding the banknotes, as they are.
Banknotes can be stored as they are. They won't get creased, and you can use vending machines and self-checkout machines smoothly.
| Temporary cards are also beautiful
The bill holder section can store cards you don't use often. It doesn't affect the opening and closing of the wallet, and it's just as easy to take them out.
| Easy-to-access, spill-proof coin pocket
The coin pocket features a simple design without zippers or snaps. Its shallow pocket and short flap make it easy to access and prevent coins from spilling out. It has a storage capacity of 15 coins (999 yen) or more.
| Compact Yet Global
Surprisingly, many currencies around the world are larger than Japan’s ¥10,000 bill or ¥500 coin.
This wallet accommodates most of them, making it comfortable to use even when traveling abroad.
| Comfortable pockets
It's so thin you'll forget you even have it in your pocket.
Bring minimalist choices into your daily life that will lighten your spirit as well.
About Museum Leather
Origins
Museum Calf is a leather created by the prestigious Italian tanner ILCIA, inspired by the marbled pattern of marble. As its name suggests, beautiful light and shade patterns are created by craftsmen applying multiple layers of dye in a painterly way.
In addition to the dye finish that makes the most of the delicate texture unique to calfskin, the polished silver surface gives off an elegant luster that deepens the more you use it.
Tanning and Manufacturing
Made from finely textured, high-quality French calf leather.
After chrome tanning, skilled craftsmen repeatedly dye the leather with pure aniline using a technique called "hand tamponato". This process creates a transparent, artistic marble pattern. The silver surface is then carefully polished with glass to give it a refined, glossy finish.
LWG (Leather Working Group) environmental certification Gold rank.
Maintenance
Although it has high durability due to the chrome tanning process, it is finished with a dye that brings out its natural look, so care must be taken when handling it to avoid scratches and water stains.
If it gets wet, wipe it off immediately with a soft cloth and regularly remove any dust from the surface with a soft cloth or leather brush.
For detailed maintenance information, please see here .
Colors
Brown Marble
Black Marble
Navy Marble
*Due to differences in monitor settings and batches, the displayed color may differ slightly from the actual color.
*Please note that the pattern may vary from piece to piece.
Globally Recognized Innovation
The Hitoe® Fold series has received a total of 20 awards, including the three major global design awards: iF Design Award (Germany), Red Dot Award (Germany), and IDEA (USA), as well as the Chicago Good Design (USA) and German Design Awards (Germany). It has been highly praised for its minimalist design and comfortable usability.
Hitoe® Fold Aria — 12 Awards
DNA Paris Design Awards 2022 Winner
This international design award, originating in Paris, France, covers a wide range of fields such as architecture, interiors, and products, and evaluates innovation and beauty.
A' Design Award & Competition 2022 Iron
This is one of the world's largest international design competitions held in Italy. It selects products with excellent design and technological innovation.
iF DESIGN AWARD 2022 Winner
This is a globally prestigious design award based in Hanover, Germany, presented to products with excellent design quality.
Red Dot Design Award 2022 Winner
This international design award held in Germany recognizes excellent design from multiple perspectives, including innovation, functionality, and quality.
London International Creative Competition 2021 Official Selection
This international creative award held in London emphasizes originality and expressiveness, recognizing excellent works from around the world.
International Design Awards 2021 Bronze
This international design award held in Los Angeles, USA, showcases innovative and excellent designs to the world.
NY Product Design Awards 2021 Silver
This international product design award from New York recognizes excellent product design and user experience.
MUSE Design Awards 2021 Silver
This international award recognizes excellent designs worldwide, evaluating creativity and design perfection.
European Product Design Award 2021 Honorable Mention
This international design award honors excellent European product designs, recognizing products that combine functionality and beauty.
K-DESIGN AWARD 2021 Winner
This international design award, representing Korea, recognizes excellent designs that combine creativity, practicality, and innovation.
Omotenashi Selection 2021 Winner
This award showcases products and services with unique Japanese charm and hospitality both domestically and internationally.
Hitoe® Fold Less — 6 Awards
IDEA 2023 Finalist
The IDEA (International Design Excellence Awards) is an international design award organized by the IDSA (Industrial Designers Society of America). It is evaluated from multiple perspectives, including innovation, user experience, and contribution to society.
iF Design Award 2023 Winner
This is a globally prestigious design award based in Hanover, Germany, presented to products with excellent design quality.
Chicago Good Design Award 2022 Winner
This is a historic international design award organized by the Chicago Athenaeum Museum, continuing since 1950, which showcases excellent industrial designs to the world.
German Design Awards 2023 Special Mention
This international design award is organized by the German Design Council. It is a prestigious award where only products recognized for excellent design are nominated for an award.
DFA Design for Asia Awards 2022 Silver
This international design award is organized by the Hong Kong Design Centre. It evaluates excellent designs from an Asian perspective and recognizes the social and commercial value of design.
Omotenashi Selection 2022 Winner
This award showcases products and services with unique Japanese charm and hospitality both domestically and internationally.
Hitoe® Fold — 2 Awards
Omotenashi Selection 2020 Winner
This award showcases products and services with unique Japanese charm and hospitality both domestically and internationally.
CAMPFIRE Crowdfunding Award 2020 Product Award
This award recognizes particularly outstanding challenges among over 10,000 projects implemented on the crowdfunding service CAMPFIRE.
Crowdfunding
From June 2021 to February 2025, the Hitoe® Fold series achieved the remarkable feat of monopolizing the top three positions in fundraising for bifold wallets through crowdfunding in Japan for five consecutive years (according to our own research).
2020
51,795,439 yen・3500 people
Hitoe® Fold v.2019 -Liscio-
Achieved the highest crowdfunding amount for a wallet in Japan
2021
78,540,000 yen・2480 people
Hitoe® Fold Aria -Foschia-
Achieved the highest crowdfunding amount for a wallet in Japan
55,481,020 yen・2959 people
Hitoe® Fold v.2021 -Liscio-
Monopolized the top 1-3 positions in crowdfunding for wallets in Japan
2022
25,944,600 yen・873 people
Hitoe® Fold Less -Foschia-
13,002,000 yen・394 people
Hitoe® Fold Aria -Ortensia- & Hitoe® Fold Aria -Monocromo-
16,816,016 yen・1130 people
Hitoe® Fold v.2021 -Liscio-
2023
40,282,000 yen・1831 people
Hitoe® Fold v.2023 -Liscio-
Total crowdfunding reached 400 million yen
2024
1,782,000 yen・45 people
Hitoe® Fold Aria -Mushroom-
2025
12,971,200 yen・536 people
Hitoe® Fold v.2025- Antico -
Q&A | Hitoe® Fold
Q&A | Hitoe® FoldQ. It's not opening/closing smoothly. Are there any tips?
To open and close the wallet smoothly, follow these steps:
【To open】Bend the boundary between the coin pocket and card pocket into a "V" shape, and the inner hook will naturally disengage. There is no need to touch the inner hook directly.
【To close】While gently pressing the top, bend it into a "V" shape using the same method, and the inner hook will naturally catch on the cards.
Q. The wallet gets distorted when closed.
This is because the inner hook is hooked to the outside of the wallet. Please make sure it only hooks to the cards stored inside.
Q. Cards are difficult to remove and feel too tight.
To prevent the card pockets from becoming too loose, they are designed to be a bit snug, and may feel tight at first. Over time, they will gradually adapt to your usage and become easier to remove.
If it feels too tight initially, try inserting and removing one fewer card a few times to break in the leather before regular use.
Q. Will the cards fall out?
When the wallet is closed, the inner hook engages with the cards, preventing them from falling out.
Even when open, the cards are unlikely to fall out due to the anti-slip treatment applied.
The Hitoe® Fold Aria and Hitoe® Fold Less, with their slipless design (patent pending), are even more resistant to cards falling out.
Please note that if the wallet is laid horizontally, the anti-slip effect will be reduced as shown in the video.
Q. Will coins spill out?
The wallet has a lid that prevents coins from spilling, so coins will not spill out during normal use. As the leather breaks in, it will become even more stable.
Please note that this wallet has a vertical design, so if you open it horizontally like a typical bi-fold wallet, coins are more likely to spill out.
Q. The sound of coins bothers me.
When putting the wallet in your pocket, storing it so that the coin pocket is vertical will reduce the sound of coins. It also makes it easier for coins to align automatically.
Q. If I open it from the wrong side, will coins spill out?
Rest assured, if you turn the wallet inside out, the inner hook will not disengage and the wallet will not open.
You can identify the front side as follows (for right-handed users):
- No stitching on the right side
- The right side is where more of the cards are visible
Q. Which should I choose, right-handed or left-handed?
Please choose based on the hand you use to handle money and cards.
Q. Is it okay to stack cards with magnetic stripes?
Modern magnetic stripes have strong magnetic resistance, so stacking them is not an issue. Also, it does not affect IC chips.
However, older magnetic cards may have weaker magnetism, so to be safe, we recommend storing them with the magnetic stripes facing different directions to prevent them from overlapping.
Hitoe® Fold Series Comparison Chart
Hitoe® Fold Series Comparison Chart| Product Name | Hitoe® Fold | Hitoe® Fold Aria | Hitoe® Fold Less |
| Construction |
Single-piece construction Thick leather with no lining |
Double-faced-style construction The ultimate luxury in leather products, joining thin leather pieces |
|
|
Prevents cards from falling out Slipless |
△ | ◯ | |
| Dimensions | W86 × H89 mm | W86 × H91 mm | W86 × H91 mm |
| Weight | 36 g | 30 g | 29 g |
| Thickness (thickest part) |
6 cards 10 100-yen coins 10 banknotes when stored 13 mm |
6 cards 10 100-yen coins 10 banknotes when stored 12 mm |
3 cards 6 100-yen coins 10 banknotes when stored 9 mm |
| Max Capacity |
6 -7 cards 20 coins 15 banknotes |
6 cards 20 coins 15 banknotes |
3 cards 15 coins 15 banknotes |
* Card counts assume non-embossed cards.
* Hitoe® Fold can hold 7 cards once the leather has broken in.
specification
specificationDesigner: Hirotaka Sato
Hitoe® Fold Aria - Museum -
Sale price$280.00 USD
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Hitoe® Fold Aria - Museum -
Sale price$280.00 USD