Introducing the Michael Kors MK4140U Bierzo square frame in a full rim silhouette, this eyewear embodies refined urban luxury. The front presents a sleek black injected surface, paired with elegant metal temples for a contemporary contrast that catches the eye. With a 54mm lens width and a 17mm bridge, the frame projects confident presence while remaining wearable from desk to dusk. As a guaranteed authentic piece from Ardor Eyewear, it arrives in official packaging and is ready to be tailored to your prescription needs.

Crafted to accommodate prescription lenses with standard Base 4 curvature, the MK4140U Bierzo blends injection technology with refined metal detail. The lightweight front and sturdy temples combine durability with comfort, ensuring a secure, all-day fit. This is designer eyewear at its finest, where meticulous craftsmanship meets modern glamour.

Fit and comfort are central. The frame’s dimensions — 54mm eye size, 43mm lens height, and 140mm temple length — deliver balance across most face shapes. The Universal Geofit ensures effortless wear, while the timeless black surface coordinates with everything from tailored suiting to sleek streetwear.

Face shape guidance: this square frame tends to flatter oval and round faces by adding gentle structure. Those with square features may enjoy the frame’s architectural lines, and heart-shaped faces can lean into a bold brow-line look when paired with complementary lens shapes.

With Ardor Eyewear, you purchase genuine luxury with a seamless online experience. You can choose the frame only or add prescription lenses and we will expertly fit your lenses and ship within 8–12 days. Benefit from authentic packaging, clear tracking, and premium service that makes prescription lenses and easy ordering feel effortless.