Chair Dimensions: overall Size:23.5Lx23.5Wx46~49H; Product Weight: 33LBS; Weight capability:400LBS, Size of back(HxW): 30.5x18.5 inch,Size of seat(LxW): 21 x 18.5 inch, armrest height: 8 inch. Gas lift cylinder allows height adjusting from 16 to 19 inches. Muti-function: 90°-120° reclining for working, gaming, reading or napping; 360° swivel and smooth racing caster wheels for mobility; 400 lbs capacity. For office worker and gamer: Winged back provides multi-point body contact to share the pressure, save your spine and lumbar with ergonomic back and massage support. Eco friendly material: Quality hand sewing PU leather and 6 inches high density foam covered the steel frame, very comfortable. Level 3 gas cylinder and steel mechanism ensure the use age of the chair Service Guarantee:Our store is an award-nominated brand,committed to your satisfaction. We provide this chair with1 month replacement services and 1 year parts quality warranty.