Elena High Back Full Mesh Ergonomic Office Chair In Grey Features:Materials: Stainless steel base, Polypropylene frame, mesh, Class 4 gas lift, PU castor - Includes: 3D Adjustable headrest and lower lumber support - Armrests: 3D - Height, Forward/Back, rotation adjustment - Mechanism: Multi-function with 3-position lock - Gas Strut: Class 4Upholstery: Commercial grade mesh Colours: Black - Weight Rating: 120KGCertifications: BIFMA, TUVProduct Dimensions:Overall: 72cm W x 72cm DMaximum Overall Height: 123cm - Minimum Overall Height: 113cm - Maximum Seat Height - Top to Bottom: 55cm - Minimum Seat Height - Top to Bottom: 45cm - Overall Product Weight: 17 Kilograms - Assembly Required: Yes - Commercial Grade: Yes