Wonderfulsight 2 Piece Day+Night Vision Polarized Clip-on Flip-up Sunglasses Improve your vision ,block and reduce glaring blaze, stray light,harmful ultraviolet rays Day+Night Combination to take care of your eyes and your safty every moment New leg profile to fit both metal and plastic glasses frames Legs have soft silica gel coating to protect ophthalmic lenses and prevent shifting and scratching High Rate Visible Light Transmission above 99.8%.