Chair: Memory foam on seat Frame Construction: Metal
Armrest: 4D
Base: Wider Metal base
Caster: 60mm nylon caster
Mechanism: Butterfly
Gas Lift: Class 4
Power plug: USB
extra padded back and seat
Material: PU Leather
** Neck Pillow are included
Size: Back: 83 X 58cm / Seat: 52 X 48cm