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Musubu® ∞ Key Case - Foschia -
Connecting thoughts, continuing support.
∞ Musubu Charity Project ∞
10% of proceeds from the "Musubu®" series will be donated to support disaster-stricken areas.
This project began in January 2024 following the Noto Peninsula Earthquake.
True to the name "Musubu" (to tie or connect), we hope to provide strength to those affected by the disaster, binding people to people and thoughts to the future.
SYRINX will continue to do what we can, in whatever way we can.
Donation rate: 10% of sales (excluding tax)
Donation recipients: Japanese Red Cross Society, etc. (for disaster relief in areas affected by natural disasters)

Sandwiched by leather. That’s all.

A design pushed to the limits of minimalism, simply sandwiching keys between V-shaped leather. (Japan Patent Office Design Registration No. 1623076)
An unprecedented way to bundle keys

The keys are bundled together with a leather lace. Traditional metal rings are bulky and clunky.
The "Musubu" key case uses the softness of a leather lace to bundle keys compactly.
This is made possible by an entirely new "knotting method" that uses just three holes to secure them firmly.
With its gentle texture, you can take keys in and out with one hand, even while carrying luggage.
Flexible capacity: 1 to 10 keys

Because the length of the leather lace can be adjusted, you can choose the number of keys. It can bundle up to approximately 10 keys.

When bundling several keys, it can stand upright, keeping them from spreading out on your desk.
How to use
1. Thread

Remove any metal rings, and thread the keys directly onto the leather lace.
2. Tie

Loosely thread the lace through the three holes, then pull the lace tight to secure them firmly; they won't come undone.
3. Cut

Trim the excess lace with a utility knife.
Notes
- The leather lace is provided with extra length to flexibly accommodate the number of keys.
- The leather lace will stretch slightly and become thinner with use.
- Please be careful not to cut the lace too short, as it will make it difficult to swap keys later.
- This product is designed for users who do not change their keys frequently.
- The holes in the keys must be at least 5mm in diameter to pass the lace through.
- Depending on the size or hole position, some keys, such as car keys or apartment smart keys, may not fit.
Ultimate use of offcuts
This small, idea-packed key case was developed to effectively utilize leather offcuts left over after cutting larger products, in order to minimize waste. We only produce them when large offcuts are generated, but because we are using leather that would otherwise be discarded, we are able to offer them at a very reasonable price.
A foggy appearance
"Foschia" means fog in Italian. This vegetable-tanned oil leather features a white wax finish that gives it an appearance reminiscent of morning mist. The more you use it, the more a translucent depth will emerge.
(For details, click the "About Foschia Leather" tab)
Origins
Foschia, meaning "fog" in Italian, is characterized by its white wax-covered appearance, reminiscent of morning mist. As it is used, the wax permeates the leather, revealing a translucent finish.
Tanning and Manufacturing
Made from bovine shoulder leather sourced from Northern Europe. After vegetable tanning, the surface is lightly buffed (polished) and then coated with white wax.
Natural marks may also be visible.
LWG (Leather Working Group) Environmental Certification Gold Rank.
Maintenance
As the wax gradually permeates, an elegant and natural sheen develops. Oil care is not required unless scratches or dryness are a concern. For more details, please refer to here.
Light colors have a delicate surface and are prone to visible stains and scratches, requiring careful handling.
Colors

Misty Chocolate
Misty Navy
Misty Black
※ Due to monitor settings, and differences in dye absorption depending on the condition and part of the raw hide, and the season, there may be slight variations between the displayed color and the actual color.
Hitoe® Fold Aria - Foschia - Misty Iris
About Scuff Marks
Where the white wax is rubbed, the natural color of the leather appears, making it look darker and temporarily like fine scratches. As the wax permeates during regular use, the initial marks will gradually fade, and the leather will be covered with a translucent sheen.
During production and packpatina, minor scuffs and pressure marks may occur, resulting in individual variations in how the wax remains initially. Rest assured, the leather itself is not damaged, and these variations will become uniform as patina progresses.
About Wrinkles
Due to the wax, Foschia leather tends to wrinkle easily on the surface when bent sharply. As it is used, these wrinkles will be covered with a sheen, and the texture will gradually settle.
The video below shows an example where the entire leather was intentionally wrinkled and then used for about a month in a back pocket of trousers. The luster increases, and the wrinkle patterns develop a subdued character.
Designer: Hirotaka Sato
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About Foschia Leather
specification