Serengeti Bromo sunglasses, part of the Sport Classics Series, are the kind of sunglasses that are always up for any adventure. Lightweight & sleek without sacrificing a trace of the Serengeti signature technology. Scratch/impact-resistant lenses that guarantee optical clarity, 100% UV protection. The Spectral Control� Lens System reduces glare. All Serengeti sunglasses are designed with Photochromic lens technology making each lens adjust to light changes in the environment. When you hit the road, these glasses are with you all the way.