The main advantage of the glasses is their high durability and impact resistance. They are made of durable material and provide protection against fragments, particles and other potentially dangerous particles. The glasses are comfortable to wear. They have adjustable temples that ensure a comfortable fit for heads of different sizes and reduce discomfort during prolonged use. In addition, they have small holes at the ends of the temples, to which you can attach, for example, a string to hang the glasses around your neck.Specification: Material: PC (polycarbonate) UV resistance: none Lens width: 14 cm Lens height: 5 cm Temple length: 9.5 - 11.5 cm