* 1.49 INDEX SINGLE VISION LENSES(SPH ±4.00 , CYL ±2.00)
* 1.56 INDEX SINGLE VISION LENSES(SPH ±4.00 , CYL ±2.00)
APPLICABLE TO PRESCRIPTION WITHIN SPH ±4.00 AND/OR WITHIN CYL ±2.00
Very solid material, but very light at the same time. They look great, and the quality of the prescription glasses is very good!