• Angle Lock and height adjustable levers for easy controlling• Back knob for back height adjustment• 90°-135° adjustable angles offer the most suitable sitting posture• Breathable mesh fabric and high elasticity sponge offer you ultimate comfort• Ergonomic headrest, curved seat, and linkage armrests support your head, neck, hip, and arms• Retractable footrest enables you to stretch legs• SGS gas rod for stable lifting and strong weight capacity• 5-claw metal base ensures overall stability• 5 universal wheels for hassle-free movement