HINGE SYSTEM, BOOM!
The Hinge System may sound new to you, but newer will sound when you discover that the Roundten can be completely flattened and, within seconds, regain its original shape. Thanks to this hinge system without screws or welds, the Roundten can withstand high pressure without breaking or bending. Special Roundten hinges complete the formula of high precision materials of our glasses, which together with Flextal and Polyamide lenses can be practically unbreakable.
In addition, the Hinge System greatly facilitates the process of assembly and disassembly of the lenses without the need of any tools