The 309.6g armrest surface is unique among office chairs, gaming chairs, and mesh chairs. The soft polyurethane PU armrest surface feels soft and comfortable, just like touching delicate leather. It weighs 309.6g, which ensures sufficient stability and durability without making the chair look bulky. The soft polyurethane PU material has excellent wear resistance and can withstand the wear and tear caused by frequent daily use. Even if you put your arms on it for a long time, it is not easy to get scratches or damage. Moreover, this material is easy to clean, and stains can be wiped off, which can always keep the armrest surface clean and beautiful.