FEISEDY Vintage Polarized Photochromic Sunglasses Men Women 100 UV Protection Outdoor Square Sunglasses B1001

| Thickened and strengthened lenses | - Block 99-100% of UVA and UVB harmful radiation, with special polarizing filter, can block more than 99.96% glare, strong impact resistance, clear line of sight, no smog or Optical distortion. Get stylish outdoor polarized sunglasses to protect your eyes.
| Photochromic lens | - adjust the transmittance through the discoloration of the lens, Lenses are clear when indoors or at night and automatically darken to a sunglasses tint when exposed to UV sunlight. So eyes can adapt to changes in the ambient light, reduce visual fatigue, and protect the eyes, keep the eyes always the most comfortable state. The photochromism of the lens is automatic and reversible.