Gamakatsu GM1772 Polarized Sunglasses Smoke

Metal frame type with a lightweight thin frame. 
Large lenses that block sunlight and provide a wide field of vision. 
Temples (ear hooks) are made of soft silicone material. The balance with the lightweight front frame makes it difficult to slip off and fits gently and securely. 

All-purpose lens. By suppressing the harsh light on sunny days, it reduces damage to the eyes and reduces strain even during long fishing trips. Not only does it block out the strong sunlight in midsummer, but it also allows you to capture the slightest movements on the water surface during the morning and evening twilight hours of midwinter when the sun's angle is low and the glare is strong.

Color: Smoke
Material: Triacetate Nickel alloy
Visible light transmittance: 22%
UV cut rate: 99.9% or more
Polarization rate: 90% or more

About sunglasses
Sunglasses are designed to cut out harmful UV rays from sunlight and protect against snow and wind. They do not protect your eyes from external impacts.
Always check your sunglasses before use. Do not use them if the exterior (lenses, frames, temples, etc.) is cracked, broken, or obviously damaged. If you continue to use them in this condition, your vision may be impaired.