Introducing the Michael Kors MK4159U Saguaro eyeglasses, a refined square full rim frame in deep black acetate. This design from the MK collection embodies modern masculinity: crisp angles tempered by exquisite craftsmanship, delivering a look that is both bold and versatile. The frame is designed with a universal fit (Geofit) for comfortable wear across a range of face shapes, while a 57mm lens width and 145mm temple length provide a balanced fit for daily life and refined occasions. Crafted from premium acetate, the frame presents a sleek black front paired with durable acetate temples. With a classic eye-catching square silhouette and a full rim design, the MK4159U offers a timeless look that reads as contemporary luxury. Key measurements include 57 mm lens width, 43 mm lens height, bridge 16, and temple length 145, ensuring a comfortable, balanced profile for most face shapes. Prescription-ready with Ardor Eyewear: on this product page you can choose to buy the frame alone or add prescription lenses, and we will fit your personalised lenses and ship them to you in 8–12 days. The frame is shown with a Demo Lens for display purposes; your customised lenses will replace it on order. Face shape guidance and lifestyle: The square silhouette flatters oval and round faces, adding structure to bolder features; heart-shaped faces can also enjoy the contrast with a softer styling. Worn with tailored suiting or casual luxury, these frames embody an aspirational, cosmopolitan lifestyle—perfect for the urban professional who values authenticity and precision. Brand and credibility: Ardor Eyewear is a UK-based, official stockist of designer brands, guaranteeing authentic designer eyewear with premium packaging and fast delivery. We offer easy online ordering, virtual try-ons or home trials, and transparent returns, backed by our commitment to service and value.