The Definitive Guide to UV400 sunglasses meaning
Dr. Zhu notes that polarized and mirrored coatings are most effective for out of doors sports as well as a medium tint is great for everyday put on.If you need to go just one step additional and block out 99-a hundred% of UV rays (for example when you’re eager on yachting and want to shield your eyes in the sun), then seek out sunglasses with UV4