Sports cycling glasses are designed to reduce the glare from surfaces like water, snow, and glass. They can be highly useful for sports, cycling, driving and fishing by helping the participant in these activities to see more clearly. Professional 400 anti-UV lens, can effectively filter the blue light which are reflected by sea water and blue sky,it's more suitable for casual 、seaside and water sports. http://www.medicine.ipt.pw/News/tafseer-surah-ikhlas-with-karim-and-razan-learn-holy-quran/