Spanish handcrafted leather eyewear from the heart of Santiago de Compostela. The leather is treated with naturally occurring tannins, found in the bark of trees such as chestnut, oak, and cherry. The vegetable tanning process is carried out without the use of acids in the best traditional Spanish tanning factories. The leather is then bonded together around an internal metal frame. The internal metal frame is made in Switzerland from the best quality steel and titanium giving the frame strength and flexibility allowing them to be fitted well. The artisan manufacturing of this eyewear allows for any combination of 12 coloured leather finishes. NORRISS eyewear can be found in our ARTISAN collection.