Flat-Top 28 Bifocal 1.5 Plastic Lenses are a classic bifocal lens option designed to provide clear vision at both near and distance focal points. These lenses feature a flat-top 28 design, where the top portion of the lens is for distance vision, and the bottom portion is for near vision. The 1.5 plastic material is a standard lens option that offers good optical clarity while being relatively lightweight. These lenses are ideal for people who need both near and far vision correction but prefer the traditional bifocal format.