Glasses: Glasses made of Indian water buffalo horn

Glasses, Waldhorn made from water buffalo horn. The glasses are light, pleasant to the skin and does not cause allergies.
Flex (spring) mechanisms are installed on the earpieces, the opening angle of the earpiece is from 0 to 120 degrees.
In the frame there are adjustable nose stops made of titanium.
When buying glasses, a leather case, a microfiber cloth as a gift. You can order lenses with diopters from the German company Zeiss in these glasses, the price for lenses is not included in the price of glasses. It is possible to manufacture glasses on an individual order, as well as laser engraving. All the questions in the message.