Sinner Bruno Sport Sunglasses in Black and Green with Blue lense SISU-819-20-29 have a polycarbonate mirror lens (category 3), which is suitable for sunny weather conditions. The lenses offer 100% UV protection and provide optimal vision. The temples are made of plastic and rubber. The hinges are made of stainless steel and integrated in the frame. The SINNER BRUNO sports sunglasses are nickel-free.