Calvin Klein CK23548 N 970 frames pair a minimalist square silhouette with a transparent finish, designed for everyday prescription or clear-lens wear. Key attributes: White | Transparent | Acetate | Full-rim frame | Compatible with prescription lenses | Available in multiple sizes (53, 55) | Square frame | Minimalist branding | Transparent finish | Dimensions & fit: Lens width: 53 mm | Lens width: 55 mm | Bridge width: 16 mm | Temple length: 145 mm | Lens height: 41 mm (size 53) | Lens height: 42.4 mm (size 55) | Composition & care: Acetate | Clean lenses with a microfiber cloth and lens cleaner. Store in the supplied case when not in use. Avoid abrasive cleaners and extreme heat.