black and white
Hitoe® Fold Aria - Monocromo

Collection Introduction

Black and White

Monocromo means monochrome in Italian. The outer leather is white with a grained finish, while the inner leather is smooth black, creating a contrast between the two colors.

(Click on the " About Monocromo Leather " tab for more information.)

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Product Description

Towards perfect functional beauty

"Perfection is when you can't cut any more"
These are the words of Saint-Exupery, the author of "The Little Prince."

The Hitoe® structure (registered design) prevents items from being stacked, the metal fitting-free minimalist design and inner hook (patent) allow for smooth operation, and the slipless design prevents cards from falling out (patent pending) .

"The ultimate in minimalist design and ease of use in the Hitoe® Fold series."
That's the Hitoe® Fold Aria .

Its sophisticated design and exquisite craftsmanship have resulted in a piece of breathtakingly perfect functional beauty .

"Aria" - Light as air

"Aria" is the Italian word for air.
It can also mean a lyrical solo song in opera or religious music.
Thin, light, and as airy as possible, it is also beautiful and full of originality. This is the "Aria" series.

The challenge of thinness

The thinness is achieved through the Hitoe® structure (registered design) , which does not stack cards and coins.
- Maximum 5 overlapping pieces of leather, no metal parts, 12mm thickest when stored
(When storing 6 cards, 10 bills, and 10 100 yen coins)
Palm-sized 89mm x 91mm
・Light as air , about 30g
It can hold up to 15 bills, 20 coins, and 6 cards . Even when fully loaded, it remains slim .

The finest unrivaled tailoring

All parts are made by gluing two thin pieces of leather together to make one. This technique is said to be the ultimate luxury in leather products , and it achieves both strength and thinness . It requires a wealth of experience and skilled techniques to create a finish that does not float or sag even when bent, just like a single piece of leather.

In pursuit of simplicity, the engraving is hidden underneath the card

Thin details

The edges are made by overlapping the leather and sewing it on the outside. This is to keep it thin. If you fold the leather inside, you can make it smaller, but the leather will overlap and become thicker.
These details are faithful to the ideal of a thin wallet.

Size comparison based on end treatment method

While pursuing thinness, we ensure that the leather is thick enough to retain the natural leather texture , such as tension and firmness.

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Metal fitting-less inner hook

A new idea to use the stored cards as fasteners

We came up with an inner hook (patented) that allows cards to be hung on the wallet, rather than on the outside.
The smart leather hook is invisible from the outside , keeping the wallet slim.
This idea made it possible to create the Hitoe® Fold Aria's minimalist design without any metal fittings .

Inner hook for hanging cards integrated with bill holder

Not only does it act as a fastener, but it also prevents cards from falling out when you carry it around.

Fits inside to prevent cards from accidentally falling out

It's just sandwiched between leather.

It has a flat appearance, simply sandwiched between leather. There are no unnecessary protruding parts such as metal fittings or flaps, so it remains slim and doesn't get caught in your pocket.
The inner hook is designed not to come off when the wallet is turned upside down , so there is no need to worry about dropping coins when opening the wallet upside down.

Minimalist design with no unnecessary features

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Minimalistic and smooth operation

Quick checkout with minimal movement

The wallet can be opened and closed easily by bending it into a " L " shape, which is where the name "Fold" comes from. With this single action, you can smoothly insert and remove all of your coins and cards while keeping the wallet in portrait orientation.

Bend it into an L-shape for smooth opening and closing
(For right-handed people) The trick is to bend the bottom of the wallet into an L-shape with your left hand, without touching the inner hook.

The bills are left as is, without folding them.

Simply insert the bills without folding them . They are highly visible and easy to take out. They are gentle on the recipient and can be easily inserted into vending machines and self-checkouts because they do not have creases or bends when folded in thirds .
The bill holder is designed to be continuous with the inner hook. The curve acts as a guide, allowing you to insert and remove bills smoothly without getting caught .

You can smoothly insert and remove bills without touching the bill holder.

Prevents cards from falling out

When closed, the inner hooks hold the cards in place, and even when the wallet is open, the slip-less design (patent pending) keeps the cards from falling out .
The feel of sliding cards in and out is high quality and comfortable.

Effect of slip-less specification (patent pending)

The extra card can be used as a bill holder . It does not interfere with opening and closing the wallet.

Temporary cards are used to hold bills

Smooth, non-overflowing coin pocket

The coin pocket is shallow and has no fasteners such as zippers or hooks, so you can quickly take out the coins you need.
When storing, the lid of the coin pocket acts as a guide for smooth storage.
In addition, coins will not spill out when the wallet is closed, and even when it is open, the coin pocket has a lid to prevent spills.
There is still plenty of room even if you put in 999 yen worth (15 sheets).

Coin pocket that does not overflow even when in use

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World-renowned minimalist design

Winner of 11 prestigious design awards worldwide

Hitoe® Fold Aria has been highly praised for its functional and minimalist design, and has won 11 major design awards around the world, including the iF Design Award and the Red Dot Design Award , two of the world's top three design awards, as well as awards in London, New York, Paris and Milan. ( The entire Hitoe® Fold series has won a total of 19 awards .)

(Click on the "About Product" tab for detailed award results)

Design based on the laws of nature

"Why is the golden ratio 1:1.62 beautiful?"
The golden ratio is the ratio that appears when squares with sides that match the Fibonacci sequence (1, 2, 3, 5, 8, 13, 21...) are arranged in a spiral, as shown in the diagram below.

The Fibonacci sequence is hidden everywhere in nature: in the arrangement of sunflower seeds, the spirals in seashells, the shape of typhoons, and spiral galaxies.
This sequence can also be found in masterpieces of art, such as the pyramids, the Parthenon, and Thirty-six Views of Mount Fuji.

The golden ratio is not simply a beautiful ratio; its beauty comes from the Fibonacci sequence behind it.

Therefore, the important thing is not to make each part into the golden ratio.
The proportions from the details to the whole form the Fibonacci sequence , which is deeply connected to the laws of nature and life, resulting in a well-balanced design that resonates with the heart.

Fibonacci sequence design

Beautiful details

Precise and delicate stitching , polished edges that show the overlapping of leather, and thin lines made into the edges with a hot iron.
Hitoe® Fold Aria pursues beauty in every detail .

Beautiful edge treatment

Long-lasting and beautiful

Generally, most problems with wallets are caused by metal parts or stitching. However, Hitoe® Fold does not use any metal parts and has only four stitches .
In addition, the corners, which are prone to damage, are made more durable by layering the outer and inner leather . The seams are extremely small, so the bag will not lose its shape even when worn in a trouser pocket .

The corners are made strong by layering leather