Adapts to any head shape

- It is very easy
- She has a soft rubber ear protection
- The temples are adjustable in length, so that it really fits well and the front perfectly completes
- The rubberized straps are comfortable to the ears
- There are no pressure points on the nose bridge
- The glasses close very close from, also on the side
- You can attach a ribbon on the temples, so you can admire the spectacle at work just hang around the neck
- Adjustable tilt angle for optimal fit
- UV protection

I find no disadvantages. The spectacle makes a well-made and long-term lasting impression. Recommended!