Frame: shatter-proof nylon mesh - weight 21 grams - size: for narrow, normal and large faces. Lenses: robust polycarbonate lenses: protect the eyes from injury – 100% UV protection. Arms and nose rubberised: firm hold on the head, no slipping. Soft sponge wind protection (also removable) – seals the eye area particularly well, as inner edges are equipped with foam. Good coverage: Wind and weather protection - better peripheral vision.