Medium Square Mirror Sunglasses: 51 x 42 mm square frame designed for sunglasses enthusiasts with a face width of 135-150 mm. These 51mm wide lenses + 18mm nose bridge balance facial proportions The 139 mm temples grip securely without pinching—no more sliding down or red marks.

Ultralight & Durable Frame: PC glasses frame with wide arms durability (139 mm optimal length) with 25g featherweight comfort—perfect for tossing in your beach bag. The polarized mirrored lenses cut glare on roads/water while keeping colors true—no more squinting during boating, surfing or hikes.

UV400 & Style Essentials Shade: UV400 protection shields eyes from UVA/UVB rays, while polarized lenses reduce water/road glare by 80% . Drive safer, hike longer, and post envy-worthy OOTDs without eye strain. It is also a scientific investment in the health of your eyes.

Stylish & Gift-Ready for Female/Male - Designed for women’s/men's facial contours with medium, comfortable frames (139mm) . Comes in kinds of finishes (Fit round /heart /oval /long face shape) —perfect for gifting to moms, dads,commuters, driver，female or male outdoor enthusiasts.

30-Day Face Shape Guarantee: Confidence in every purchase, if the 146 mm width isn't your face fit(Not recommended for round/square/ diamond shaped face), return within 30 days—no questions asked. backed by SIPHEW’s 24/7 customer care.