Quantity:1pc
Color: Black
Material: ABS

Size: as shown in pic (1mm=0.0394 inch)
With built-in mirrors for the optimal direction of the gaze
Applying to your own glasses with possibly diopter
In this case, these glasses are right for you The built-in mirror ensure that the field of view is rotated within 90 ° around the horizontal axis.

So keep flat in the healthiest way, you can still use these glasses for enjoying entertainments.
The convenient anti-reflective coating and clear representation of the image help to relieve neck cramps and eye strain.

The glasses also can be used even you are wearing glasses for the myopia.