1）Product featurs: 1.67 high index lenses will be the first real dramatic jump into high index lenses for most people. Additionally, this is the most common index of lens used for those with moderate to stronger prescriptions. They are remarkably thin lenses and remain an excellent choice for anyone seeking comfort paired with sharp, minimally distorted vision. They are up to 20% thinner & lighter than polycarbonate and 40% thinner & lighter than standard CR-39 lenses with the same prescription. 2）Key Benefits： Up to 40% lighter & thinner than standard CR-39 lenses. Up to 20% Lighter & thinner than Polycarbonate lenses. Mostly flat aspheric design for lower lens distortion. Outstanding optical clarity and sharpness.3）What is the difference between HC, HMC and SHC？

Hard coating	AR coating/Hard multi coating	Super hydrophobic coating
makes the uncoated lens hard and increases the abrasion resistance	increases the transmittance of the lens and reduces surface reflections	makes the lens waterproof, antistatic, anti slip and oil resistance

1.67 single vision optical lens
Model:	1.67 optical lens
Place of Origin:	Jiangsu, China
Brand:	SETO
Lenses Material:	Resin
Lenses Color	Clear
Refractive Index:	1.67
Diameter:	65/70/75 mm
Abbe Value:	32
Specific Gravity:	1.35
Transmittance:	>97%
Coating Choice:	HMC/SHMC
Coating color	Green
Power Range:	Sph: 0.00 ~-15.00;+0.25~+6.00   CYL: 0~ -4.00