English
P99162
Koji Masuda
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Introducing the KOJI P99162, the newest expression of our T18 Series, featuring the iconic browline design—a silhouette that has defined optical style for over seven decades. With its carefully calibrated 51-18-148 dimensions, this model captures the timeless appeal of mid-century eyewear while delivering the extraordinary performance of premium titanium construction. For B2B partners seeking to offer authentic retro aesthetics with modern material innovation, the KOJI P99162 represents the perfect synthesis of heritage and technology. We provide comprehensive OEM and ODM services to make this classic design uniquely yours.

The browline design, first introduced in the 1950s, remains one of the most enduring silhouettes in eyewear history -7. Characterized by its distinctive upper rim that mimics the eyebrow, this style creates a sophisticated, intellectual aesthetic that has adorned everyone from professors to celebrities. The KOJI P99162 honors this legacy while reimagining it through the lens of modern materials science.
Classic Specifications: Authentically proportioned at 51-18-148, offering:
51mm lens width: The classic medium size that defines browline proportions
18mm bridge width: Standard bridge ensuring comfortable, authentic fit
148mm temple length: Extended length for secure, comfortable wear
Premium Titanium Construction: Crafted from high-quality titanium, delivering exceptional properties:
Ultra-Lightweight: Significantly lighter than traditional browline materials—effortless all-day comfort
Exceptional Durability: Titanium's high strength-to-weight ratio ensures long-lasting performance
Corrosion Resistance: Withstands sweat, moisture, and daily wear without degradation
Hypoallergenic Excellence: Ideal for sensitive skin—completely nickel-free -6
Authentic Browline Design: The P99162 features the distinctive browline structure that defines the category:
Upper rim emphasis: Creates the signature "eyebrow" effect
Dual-material aesthetic: Titanium construction with refined finishing
Period-accurate proportions: Faithful to mid-century design principles
Modern refinement: Enhanced comfort and durability through advanced engineering
Enhanced Rim Construction: Building on the T18 Series "套圈" expertise, the browline design incorporates:
Reinforced upper rim: Structural integrity for the signature browline shape
Precision welding: Seamless integration of components
Distinctive detailing: Visible craftsmanship that sets it apart


The KOJI P99162 is engineered for individuals who appreciate timeless design and understand that true style transcends trends. Its 51mm lens width with 18mm bridge creates the classic browline silhouette that has remained relevant for generations. This frame is exceptionally well-suited for:
Vintage enthusiasts: Authentic mid-century optical aesthetics
Intellectuals and academics: The browline's traditional association with scholarship
Professionals seeking distinction: Stands out from conventional designs
Creative individuals: Appreciate the design's artistic heritage
Sensitive skin wearers: Complete hypoallergenic titanium construction
Unisex appeal: Browline design transcends gender boundaries
| Era | Significance |
|---|---|
| 1950s | Browline introduced as revolutionary design |
| 1960s-70s | Adopted by intellectuals, artists, cultural icons |
| 1980s-90s | Maintained cult status among design enthusiasts |
| 2000s-present | Major vintage revival across fashion categories |
| Today | KOJI P99162: Authentic heritage, modern materials |
| Model | Size | Bridge | Temple | Design Focus |
|---|---|---|---|---|
| T-18199 | 46-21-145 | 21mm | 145mm | Petite classic rim |
| T-18276 | 46-21-145 | 21mm | 145mm | Petite modern rim |
| T-18297 | 50-18-142 | 18mm | 142mm | Universal rim |
| P99162 | 51-18-148 | 18mm | 148mm | Classic browline |
| T-18296 | 52-19-150 | 19mm | 150mm | Generous rim |
| Feature | Benefit |
|---|---|
| Premium Titanium | Lightweight, durable, hypoallergenic |
| Authentic Browline Design | Timeless style, heritage appeal |
| 51-18-148 Fit | Classic proportions, extended temples |
| Signature Rim Construction | Reinforced structure, distinctive detailing |
| OEM/ODM Service | Customize for your brand |
Browline frames traditionally used heavier materials. Titanium transforms the experience:
| Property | KOJI Titanium Browline | Traditional Metal Browline |
|---|---|---|
| Weight | ⭐⭐⭐⭐⭐ Ultra-lightweight | ⭐⭐ Heavier |
| Durability | ⭐⭐⭐⭐⭐ Superior | ⭐⭐⭐⭐ Good |
| Corrosion Resistance | ⭐⭐⭐⭐⭐ Excellent | ⭐⭐ Prone to corrosion |
| Hypoallergenic | ⭐⭐⭐⭐⭐ Nickel-free | ⭐⭐ May contain nickel |
| Flexibility | ⭐⭐⭐⭐ Comfortable flex | ⭐⭐ Rigid |
| Longevity | ⭐⭐⭐⭐⭐ Maintains shape | ⭐⭐⭐ May deform |
We help you bring authentic vintage designs with modern materials to your customers.
Comprehensive Customization: From period-appropriate colors to laser-engraved branding and premium packaging
Global Compliance: All titanium materials meet stringent international standards (CE, FDA, ISO 12870)
Specialized Production: Our titanium manufacturing expertise ensures consistent quality and precision
White-Glove Support: Flexible payment terms, premium logistics, and dedicated after-sales service



Q1: What exactly is a browline frame?
A: A browline frame, first introduced in the 1950s, features a distinctive design where the upper portion of the frame (the "brow") is made of a darker or more prominent material, mimicking the appearance of eyebrows -7. The lower rim is often thinner or made of a different material. The KOJI P99162 captures this classic aesthetic with premium titanium construction throughout.
Q2: Who is the ideal customer for the P99162?
A: The P99162 appeals to:
Vintage enthusiasts: Seeking authentic mid-century style
Intellectuals and academics: The browline's traditional association with scholarship
Design-conscious professionals: Standout style without being flashy
Creative individuals: Appreciation for design heritage
Anyone seeking distinctive eyewear: The browline stands out from conventional frames
Q3: What makes the 148mm temples important?
A: The 148mm temple length provides:
Enhanced fit: Extended length for secure, comfortable wear
Balanced proportions: Properly scaled for the 51mm browline design
All-day comfort: Accommodates various head sizes without pressure
Q4: Is titanium suitable for a classic design like browline?
A: Absolutely. Titanium transforms the browline experience:
Reduces weight: Traditional browlines can be heavy; titanium makes them feather-light
Improves comfort: Flexibility and hypoallergenic properties enhance wearability
Ensures longevity: Corrosion resistance maintains appearance for decades
Preserves authenticity: The design remains faithful while materials advance
Q5: Can the P99162 accommodate prescription lenses?
A: Yes. The P99162 is a standard optical frame fully compatible with:
Single-vision prescriptions
Bifocal lenses
Progressive (multifocal) lenses—the 51mm size provides adequate vertical space
High-index lenses for stronger prescriptions
Q6: What colors and finishes are available for the P99162?
A: The P99162 is available in finishes that complement its vintage character:
Matte Silver: Classic titanium elegance
Gunmetal: Modern sophistication with retro appeal
Gold: Warm vintage luxury
Black: Timeless versatility
Two-Tone Combinations: Upper rim and lower rim contrasting options
Custom colors: Develop exclusive vintage signatures through our ODM service
All finishes achieved through advanced PVD coating technology for lasting vibrancy.
Q7: What export standards do your titanium frames meet?
A: All our titanium frames comply with:
CE (European optical frame standards)
FDA (U.S. regulatory requirements)
ISO 12870 (International ophthalmic optics standards)
RoHS (Restriction of hazardous substances)
Full documentation provided for customs clearance worldwide.
⭐⭐⭐⭐⭐
*"The KOJI P99162 has become an instant classic in our shop. Customers who appreciate vintage style immediately recognize the authentic browline proportions—the 51-18-148 dimensions are spot-on for period accuracy. The titanium construction is a revelation for this design; traditional browlines can be heavy, but this one is remarkably lightweight. We've had customers return to buy a second color. A perfect marriage of heritage and innovation."*
— Vintage Eyewear Specialist, Japan
| Parameter | Value |
|---|---|
| Model | KOJI P99162 |
| Series | T18 Series |
| Design Style | Classic Browline / Retro |
| Material | Premium Titanium |
| Dimensions | 51-18-148 |
| Lens Width | 51mm |
| Bridge Width | 18mm |
| Temple Length | 148mm |
| Weight | ~9-10 grams (with demo lenses) |
| Certifications | CE, FDA, ISO 12870, RoHS |
