Description
The STEPPER Eyeglasses SI-4035 F020 are a classic German-engineered optical frame that represents Stepper’s core philosophy of ultra-light titanium construction, ergonomic comfort, and timeless everyday functionality. This model is part of the well-known SI-4035 series, which is widely appreciated for its durability and clean rectangular styling.
The SI-4035 features a full-rim rectangular silhouette with slightly softened edges, giving it a balanced, professional appearance that works well in both formal and casual environments. The design is minimal and practical, reflecting Stepper’s focus on comfort-driven eyewear rather than fashion-heavy styling.
The “F020” color code is typically associated with a silver / gunmetal grey metallic finish, giving the frame a clean, technical look. This neutral tone makes it highly versatile and suitable for everyday wear across different outfits and settings.
Build & Materials
The frame is crafted from lightweight titanium construction, which is one of Stepper’s key engineering strengths. Titanium provides:
- Extremely low weight for all-day comfort
- High durability and long-term stability
- Corrosion resistance
- Hypoallergenic properties for sensitive skin
Retail specifications confirm the SI-4035 uses a titanium-based full-rim structure designed for precision fit and long-term wear.
Design & Comfort Features
The SI-4035 is built with ergonomic comfort in mind:
- Adjustable silicone nose pads for personalized fit
- Slim titanium temples for reduced pressure behind the ears
- Spring hinges for flexibility and durability in daily use
- Balanced weight distribution for long wearing sessions
These features make it especially suitable for office use, reading, driving, and extended screen time.
Fit & Sizing
Typical sizing for the SI-4035 is:
- 55 mm lens width
- 17 mm bridge width
- 140 mm temple length
This places it in a medium fit category, suitable for most adult face shapes.
Lens Compatibility
The rectangular lens shape supports:
- Single vision lenses
- Reading lenses
- Bifocal lenses
- Progressive lenses (progressive-friendly design in many variants)
Key Features
- Brand: Stepper
- Model: SI-4035
- Color Code: F020 (Silver / Gunmetal tone)
- Frame Style: Full-rim rectangular optical frame
- Material: Lightweight titanium construction
- Design: German minimalist ergonomic eyewear
- Shape: Rectangular silhouette with soft edges
- Fit: Medium (55–17–140 mm)
- Bridge & Nose Pads: Adjustable silicone nose pads
- Hinges: Spring hinges for flexibility
- Temples: Slim ergonomic titanium temples
- Gender: Unisex (commonly men’s styling)
- Comfort: Ultra-lightweight design for all-day wear
- Lens Compatibility: Prescription, reading, bifocal, progressive lenses
- Style Identity: Classic technical titanium eyewear with clean professional aesthetics






