ND2-400 Adjustable Dimming Glasses ND Filter UV400 Polarized Sunglasses With Glasse Case 9 Level Fishing Sunglasses Outdoor

The ND2-400 Adjustable Dimming Glasses are specialized outdoor sunglasses that feature a manually adjustable variable neutral density (ND) filter. Commonly designed in a round or retro punk aesthetic, these glasses utilize a rotating outer bezel (similar to a camera lens filter) to change the lens darkness across 9 distinct levels. 

Key Features & Specifications

• 9-Level Variable Tint (ND2–ND400): You can twist the lens frame to transition seamlessly from a mild tint (ND2) to an extremely dark shade (ND400), making them highly adaptable to changing cloud cover or intense midday sun. 
• Polarized Protection: The lenses significantly eliminate glare reflecting off flat surfaces like water or roads. This feature makes them highly popular as fishing sunglasses, as cutting surface glare allows you to see deep into the water. 
• UV400 Shielding: They provide 100% protection against harmful UVA and UVB rays to ensure long-term eye safety. 
• Durable Construction: Typically built with a lightweight polycarbonate (PC) and metal composite frame, they offer standard comfort for activities like fishing, driving, hiking, and cycling. 
• Standard Dimensions: Most variants feature a total length of roughly 140mm and a lens diameter of 48mm.