Size = lens width – bridge – temple length, in mm (e.g. 50-23-145). Lens width is the number to match with your current frames.
Eyewear Size Guide
Understanding your eyewear measurements ensures a proper, comfortable fit. Most frames list their measurements inside the arm in this format:
50 ▢ 18 – 140
Lens Width ▢ Bridge Width – Temple Length (all in millimeters)
Eyeglass Measurement Breakdown
| Measurement | Description | Typical Range |
|---|---|---|
| Lens Width | Horizontal width of one lens | 48–55 mm |
| Bridge Width | Distance between the lenses | 16–22 mm |
| Temple Length | Length of the arm piece | 135–150 mm |
| Lens Height | Vertical height of the lens (important for sunglasses) | 30–45 mm |
| Frame Width | Total width across the front of the frame | 120–145 mm |
General Fit Recommendations
| Size | Lens Width | Bridge | Temple | Best For |
|---|---|---|---|---|
| Small | Under 49 mm | 16–18 mm | 135–140 mm | Narrow faces |
| Medium | 50–54 mm | 17–20 mm | 140–145 mm | Most adults |
| Large | 55-59 mm | 18–22 mm | 145–150 mm | Wider faces |
| Oversize | Over 60 mm | 18–22 mm | 145–150 mm | Wider faces |
If you need help selecting the perfect frame size, our team is always happy to assist.
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Description
Fossil FOS 3158/S Sunglasses feature a rectangular plastic frame designed for women. These sunglasses offer a comfortable fit with a clean, modern style.
The FOS 3158/S suits both casual and formal settings, combining practicality with refined design.
Beverly Hills Eyewear ensures all products are authentic, new, and include original accessories, providing genuine designer eyewear at competitive prices.
Details:
- Style Name: FOS 3158/S
- Designer: Fossil
- Gender: Women
- Frame Style: Rectangular
- Frame Material: Plastic
- Country of Origin: China
Our Guarantee: All items sold on BHEW are brand new, defect-free, 100% authentic, and include all original accessories. As a leading North American eyewear distributor, we offer premium designer eyewear at exceptional value.
Description
Fossil FOS 3158/S Sunglasses feature a rectangular plastic frame designed for women. These sunglasses offer a comfortable fit with a clean, modern style.
The FOS 3158/S suits both casual and formal settings, combining practicality with refined design.
Beverly Hills Eyewear ensures all products are authentic, new, and include original accessories, providing genuine designer eyewear at competitive prices.
Details:
- Style Name: FOS 3158/S
- Designer: Fossil
- Gender: Women
- Frame Style: Rectangular
- Frame Material: Plastic
- Country of Origin: China
Our Guarantee: All items sold on BHEW are brand new, defect-free, 100% authentic, and include all original accessories. As a leading North American eyewear distributor, we offer premium designer eyewear at exceptional value.