Ergonomic chair made by the Scandinavian company Stokke, designed by Peter Opsvik. Made of a fully adjustable wooden structure and a padded seat coveresd in black fabric. It is considered one of the best chairs for prolonged sitting work. The height is adjustable from 93 to 103 cm, the knee support points are also adjustable, as are the seat and backrest. In excellent condition, with slight signs of aging, as shown in the photos.