● Thick sponge cushion and breathable fabric for ultimate comfort● 15.5"-19" adjustable seat height for customized comfort ● Easy to adjust the height by lifting the height adjustment lever● 15° gentle rocking function brings optimal relaxation● Ergonomic design supports extended periods of sitting● Armless design maximizes the available space in your office area ● Sturdy metal base ensures strong stability and load capacity● SGS certified gas lift provides strong support and high safety ● 5 smooth rolling casters make it easy to move around● Can be used as an office chair or vanity chair