The Laceto NASH polarised sunglasses come with a plastic frame with a matte finish in black which is complemented perfectly by green details. The polarised smoky lenses have a filter category of 3 which is suitable for casual wear during sunny summer days. A filter of this category transmits only 8-18% of sunlight. The glasses have a polarising treatment and they filter reflected sunlight which will be appreciated for example by drivers in winter or after rain