The Nannini Compact 1 reading glasses are revolutionary in terms of construction. The patented PFT (Pivoting Folding Temples) mechanism allows the temples to have a double movement (rotation and flexion). This technology allows them to be folded and stored in a durable polypropylene case just 10mm thick. This product is made from hypoallergenic materials that meet the highest quality standards: focus centers are perfectly aligned and pupillary distance and diopter parity are electronically verified. Grilamid TR90 temples offer sturdiness practicality and functionality.