Very good and comfortable, solid work took the chair in Materiel, super colors and stable substance. But today after a year of gas spring has simply aufgegeben.Der chair went down and that's it "Schaaaaaaaaaaaaaaaade" !!! Amazon Danck the chair will be picked up on guarantee and the purchase amount erstattet.Super Amazon service !!! I now have another model chosen, because I fear that the gas spring failed again. So was just a pity a Top comfortable chair.