Eschenbach's long-selling portable loupe is made from optical resin from Eschenbach's proprietary PXM, a material that has all the transparency, purity, hardness, and resolution required for lenses.
The lenses are coated with anti-static, anti-fog, and anti-scratch coating to keep dust out.
Uses spherical convex lenses that are visible from both sides. The leather case comes in a wide variety of variations such as shape, color, size, and lens magnification, making it a great gift.