1.5 mm thick metal frame 5 Star nylon base with 60 mm Polyurethane caster wheels Last Generation Class-4 gas lift Dense original memory foam High quality eco leather Headrest pillow Lumbar support pillow 3D adjustable armrests Tilted backrest 90°-165° Maximum weight of chair load - 150kg Specification: General Accessory Name Gaming Chair Wheels 60mm Polyurethane Colour Black/Orange Lift Class 4 Gas Lift Maximum Weight Of Load 150 kg Armrests 3D Adjustable Backrest Tilted 90°-165° Bending Mechanism Butterfly Materials PU Leather, Original and Reprocessed foam, 1.5mm Thick Metal Frame, Nylon 5 Stars Base Headrest Pillow Soft Memory Foam Package Type Retail Package Size Height 320 mm Width 650 mm Length 870 mm Weight 21kg