Guess GU7776 20W-54 Grey / Blue Gradient Lenses Easy to wear square front shape and thin front profile. Popular colour tortoise palette options. Thin temple design with Iconic Triangle logo and colour enamel detailing. Filter Category 3: General purpose sunglasses. High protection against sunglare. Good UV protection. Not suitable for driving in twilight or at night. Sunglasses and Fashion Spectacles are: - Not for direct observation of the sun. Not for protection against artificial light sources, e.g. solaria. Not for use as eye protection against mechanical impact hazards.