Materials: 1: Chrome aluminium alloy base with castors 2: PU/split leather/top grain Chinese leather/top grain Italian leather 3: Chrome aluminium alloy armrests and frame 4: High density foam or fire retardant foam 5: Knee tilt lock mechanism and BIFMA gas lift . UK fire retardant standard and US fire retardant standard are available. Size: W58XD63XH115-125CM Packing Details: Export carton, 2PCS/CTN or 1piece/CTN Loading capacity: 400pieces/40'HC.