Good eyeglasses are recognizable by their "sound" and "feel." The romance of hinges, residing in unseen parts.

Hello!

Recently, I've often heard the term "quiet luxury" as a trend in the fashion industry. This is a style that focuses on "essence," such as the quality of materials and excellent tailoring, rather than prominently displaying recognizable brand logos.

Actually, in our world of eyewear, there's a part that symbolizes this "quiet luxury." It's the "hinge," the joint that connects the frame's front to the temples.

Today, I'd like to share some rather niche information about this small part, which is often overlooked but plays a crucial role in determining the lifespan of eyeglasses.

■ The Difference Between 3-Barrel, 5-Barrel, and "7-Barrel" Hinges Most common casual eyeglasses use a "3-barrel hinge." Slightly better ones use a "5-barrel" hinge. The difference lies in the number of interlocking segments: three or five.

However, many models, including those in our collection, often adopt an even more advanced "7-barrel hinge."

Imagine interlocking your fingers. If you interlock them deeply, crossing many fingers to the roots, it's much more stable and harder to pull apart than if you interlock them shallowly, right? The same applies to hinges. The more segments (barrels) there are, the greater the contact surface, the more stable the friction, and the overwhelmingly stronger it becomes against vertical movement and deformation.

■ Enjoying the "Sound" and "Resistance" So, why are 7-barrel hinges good? It's not just about durability. What I really want you to experience in our stores is the "feel" when folding the temples.

While inexpensive frames close lightly with a "clack," frames with 7-barrel hinges move with a certain… "smooth" feeling, a moderate resistance (torque). They are less likely to loosen, and the smooth opening and closing continues indefinitely.

It might be similar to the feeling of a luxury car door closing with a solid sound, seamlessly. If you try to listen for the sound of the hinge moving near your ear, you won't hear any rattling. There's only the quietness of precise parts interlocking and moving. We believe this is a testament to "reliable quality" that satisfies an adult's desire for ownership.

■ For Using Good Things for a Long Time Naturally, an increase in parts raises manufacturing costs and requires the skilled adjustment techniques of artisans. Even so, we insist on 7-barrel hinges (and riveted joints) because "we want you to cherish them for a long time."

While it's fun to follow design trends, there's a sense of reliability as a tool that can be felt in those unexpected moments when you think, "Ah, these glasses are really well-made."

When you pick up our eyeglasses, including METRONOME and Trad, please try slowly opening and closing the temples. You should feel the dedication we've put into them through your fingertips.