CH-391B-XL

Frame: Black plastic+ glass fiber frame
Back: Fixed lumbar support
Arm: Up and down armrest 
Foam: High density foam
Mechanism: 3-position lock synchro tilt mechanism with seat sliding function.
Gas lift: 100mm extended length, Class-3 gas lift
Base: 340mm nylon base+nylon caster
Product Dimensions: D24.41" × W25.79" × H(39.37"–43.11")
Package Dimensions: 28″*12″*25″
N.W.: 28.22 lbs
G.W.: 35.71 lbs