ProtoArc EC300 Ergonomic Office Chair with Height Adjustable Backrest

Product Information

About this item

• Customizable Back Support: A 5-height backrest and targeted lumbar support help align key support zones with your spine, giving office users a more tailored fit through long desk sessions
• Lower Back and Sacrum Support: The wider lumbar surface supports the lower back and sacrum area, helping promote a more natural seated posture during focused workdays
• Sliding Seat Depth: A 5-position seat slider with 1.97"(50mm) adjustment helps match thigh support to different leg lengths, keeping your back in contact with the chair
• Pressure-Distributing Cushion: 55 high-density foam evenly supports your hips and thighs, reducing pressure points while maintaining stability. Firm enough to prevent bottoming out – comfortable enough for all-day work
• 3D Adjustable Headrest: Up/down, forward/back, pillow rotation, and overall rotation let you fine-tune head and neck support for reading, typing, or leaning back
• 4-Position Recline: Lock the backrest at 90°, 105°, 120°, or 130° with adjustable tilt tension, so you can move from focused work to reading or short breaks
• Stable Office Build: An alloy base, SGS Class-4 gas lift, and quiet-roll casters support smooth movement and steady daily use for users 5‘4" to 6'1", up to 220 lb