Thanks to the nature of this small artisan business you can have a conversation with the designer. You should always have your requirements properly understood and achieved. This could be about dimensions, shapes, colours, lenses models and finishes, choice of materials. 
That is totally unique in a market immensely dominated by mass produced plastic injected products. 
All of the designs featured in the shop are being made one at a time, when sold out they can be reproduced again or with another variant upon request.

I am always happy to work on the most original, improbable and exciting projects, as I did in the past for mountaineers, performers, motorcyclists, artists, theaters or even the movie industry. Please do not hesitate to contact me to express your ideas and to make them real.
If feasible I always draw a 3D CAD model for approval and quote before cutting the first chips.