These small. foldable reading glasses fit into a thin. carry-anywhere plastic container and fold to just 1.3 cm in height.

The special 90-degree spring-loaded hinge that allows them to fold down to just 1.3 cm (1/2 inch) height allows them to achieve this.

Specifications:

With their slingshot hinge. these adaptable folding reading glasses fit faces of all shapes and sizes.