Size and Fit Guide
Frame Measurements Explained
Most sunglasses use three main measurements:
① Lens Width — The horizontal width of each lens
② Bridge Width — The space between the lenses
③ Temple Length — The length of the arms (from hinge to ear)
Example format: 57–18 137 mm
(Lens Width – Bridge Width – Temple Length)
2. How Our Frames Fit
Our frames are designed to fit most face shapes, offering:
- Universal Fit for everyday and sport use
- Flexible TR90 material for lightness and comfort
- Secure grip suitable for running, cycling, hiking, and daily activities
- Medium Frame Size (ideal for men & women)
3. Fit Recommendations by Face Shape
Round Face
✔ Square or rectangular frames add definition
✔ Wider frames balance softer features
Oval Face
✔ Most styles fit well
✔ Medium-width frames provide the best proportion
Square Face
✔ Curved or rounder styles soften angles
✔ Medium-to-wide frames offer balance
Heart-Shaped Face
✔ Frames with slightly wider bottoms create symmetry
✔ Avoid extremely oversized tops
4. How to Know If the Sunglasses Fit Well
A good fit should:
- Sit comfortably on your nose without sliding
- Rest lightly on your ears
- Stay stable during movement
- Not pinch your temples
- Not leave marks after long wear
If your sunglasses slide down:
→ Try tightening the temple angle or choosing a frame with more nose support.
If your sunglasses feel tight:
→ A slightly wider frame or flexible TR material will help.
5. Unisex Fit for Active & Daily Wear
All Great Vision sunglasses are designed as unisex with:
- Lightweight TR90 frame
- Universal nose fit
- Curved temple design for stability
- Optimal grip for both lifestyle & sports use
This ensures comfort during jogging, cycling, driving, or daily outdoor activities.
6. Still Unsure About the Fit?
If you need help choosing the best size for your face shape or activity, you can email us:
We’re happy to recommend the best style for you.