Nitro is the lifestyle glass. Friction rubber nose piece and temple ends keep the glass secure. While your choice of great frame or lens colors and even rubberized frames makes a statement.
|0 = Dark conditions such as sunset, night, indoor, snowy or cloudy. LT 80-100%|
|1 = Flat light conditions, increase contrast and brighten up the landscape. LT 43-80%|
|2 = Increase contrast great for bright days, allround. LT 18-43%|
|3 = For bright conditions. LT 8-18%|
|4 = Exceptionally strong sunlight. LT 3-8%|