These designer prescription glasses are made to accommodate most prescription lenses.TITANflex M874 frames have a rectangle shape, which helps to balance rounded facial features. Frame shape is the most noticeable feature of a pair of glasses, followed by frame color and frame size. Top brands always have a large collection of rectangle frame shape glasses, as well as oval frame shape glasses.TITANflex M874 frames feature a fashionable full frame design, which is the largest component of designer eyeglasses brands collections. A rim all the way around the lenses, provides for maximum stability and durability.The frame has adjustable nosepads, a popular feature providing comfort and precision to any nose shape.Designed for adults, this model has a Regular type hinge for greater comfort.Standard skull temples can be easily adjusted to fit perfectly behind your ears.This frame has a total width of 134mm.Material defects or workmanship: 24 month warranty. The warrantee by the manufacturer covers manufacturer's defects for the frame. As an online optical superstore, we can help to process a warrantee for you with the manufacturer, according to their return policy. TITANflex Glasses TITANflex glasses are made by Eschenbach Optik, a market leader in German eyewear, and founded in 1913. Eschenbach Optik invented TITANflex® glasses in 1988 – and has since reinforced the unique combination of perfect wearing comfort and absolute design freedom. The TITANflex® brand is synonymous with superior memory metal technology and high quality materials. All glasses are super flexible at the bridge and temple, ultra-lightweight and less breakable than traditional frames.