synchro mechanism with 5 locking positions. backrest reverse lock system and body weight tension control adjustment. internal structure from beech plywood Covering of seat, back and arms in full grain leather black (Yb) and ivory (YC) from stock, brown (Yd) and red (YF) on request. base in polished aluminium (sQ). seat height adjustable from 42 to 56 cm.
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