About F
Eyewear inspired by outdoor activities
I began mountain climbing a few years ago, and through that experience, I identified the functional requirements for outdoor gear and translated them into a design that meets those needs. Reducing the physical burden while on the move also helps lighten one’s state of mind. I wanted to create eyewear that feels like an extension of the wearer—an integral part of oneself—so I focused on "lightness" and "fit," which led to the inception of the "F" series.
Classic Style × Active System
OUTSIDE: A classic, accessible aesthetic. INSIDE: Integrated features that adapt to active movement. We approached the development with the concept of an "active-classic" design—eyewear versatile enough for any situation, anywhere, and at any time.
「Ｆ」オリジナルロングカーブテンプル構造
大きくカーブしたテンプルは掛けたときに、痛みを感じやすいこめかみや側頭部を交わし、後頭部で支えます。後頭部で支えることにより、側頭を挟む力（側圧）を軽減し、軽く柔らかな掛け心地を実現しました。掛け外しがスムーズにできるように、またヘルメットが必要な環境においても干渉しづらいように形状はストレート型を採用しました。
※意匠登録 第1676855号
F - P MODEL
Crafted from an ultra-lightweight resin, these frames are surprisingly light, despite their substantial appearance. The design incorporates proprietary "F" structural pads on the nose pads and the inner side of the temples, made from a non-slip, rubber-like material called Lavalon™. The unique, long-curved temples are designed to provide support from the back of the head, ensuring the frames stay securely in place even during active movement. The anti-slip components are positioned so that they remain hidden from the outside, maintaining a formal, professional look suitable even for business settings. Furthermore, these pads are secured using a specialized structure that requires no adhesive—a design developed specifically to prevent the pads from detaching due to the degradation of glue over time.
F - T MODEL
The temple mechanism used in the F-P model has been reconstructed using beta-titanium. This material offers greater durability than plastic resin while successfully maintaining the same gentle, comfortable fit. A key feature of the F-T model is its slim frame and temple design, which ensures that the wearer’s overall appearance remains largely unchanged.A proprietary "F" structural head pad is positioned on the inner side of the temples. It is crafted from Lavalon™, a material that prevents slipping caused by rain or perspiration. Because the design provides support at the back of the head, the glasses remain securely in place even during active movement. The anti-slip pads are positioned so that they remain hidden from the outside, ensuring a formal, professional look suitable even for business settings. Furthermore, the head pads are designed to be attached without the use of adhesives—a feature developed specifically to prevent the pads from detaching due to the degradation of glue over time.
F - C MODEL
The F-C model is a combination frame featuring an acetate front paired with beta-titanium temples. The wide beta-titanium temples—developed specifically for this frame—offer a unique balance of ruggedness and lightweight comfort.
Integrated into the inner side of the temples is a proprietary "F" head-pad system. Crafted from Rabalon™, a material that remains slip-resistant even when exposed to rain or sweat, this design anchors the glasses against the back of the head, ensuring they stay securely in place during active movement. The pads are positioned so that they remain hidden from view, maintaining a formal, professional appearance suitable even for business settings. Furthermore, the head-pad system is designed to be secured without the use of adhesives—a feature developed to prevent the pads from detaching due to the degradation of glue over time.