Ergonomic Backrest: The S-shaped backrest perfectly contours to your spine and reclines 95°-135° for ideal support whether working intensely, relaxing, or taking breaks Fully Adjustable: Easily customise the office chair's seat height by 10 cm, lumbar support position (up or down, forward or back), headrest angle and height, and armrest height by 7 cm for personalised comfort All-Day Breatheable Support: Double-layer mesh of this desk chair keeps you cool and comfortable. The contoured seat cushion with thick resilient foam padding relieves hip pressure for lasting support Safe and Durable: Premium gas lift and seat mechanism ensure safety. The sturdy five-star base of this ergonomic office chair has passed the static pressure test of 1,136 kg for lasting durability Easy Assembly: Thanks to the illustrated instructions and labelled parts, one person can assemble this computer chair in just 15–30 minutes