Seats, backrests and cushions are made of natural Tuscan leather with ‘in pit’ vegetable tanning, a type of treatment that instills the typical artisanal characteristics of the product. Subsequently it is processed in a ‘vegetable’ way, treated with tannins, oils and fatliquors of biological origin. No anti-stain treatments are performed, so the leather continues to ‘live’, undergoing a natural aging process which adds ‘value’ over time. For the Viking K collection, leathers with a thickness of 2.5 mm are used, in all the other collections a thickness of 1 mm is used.