Byblos BY031 C2

Model:  BY031
Color: 43C2

For your lenses, choose:
No thinning → Degrees up to ±2.50
1^st stage thinning →Degrees from ±2.0 to ±3.75
2^nd stage thinning →Degrees from ±3.0 to ±6.0
3^rd stage thinning →Degrees from ±4.75 and above
For more information on lens selection, click here.