OC12, Ergonomic Office Chair

Regular price $359.99
Sale price $359.99 Regular price $499.99
Save $140 (28%)
Color: Black
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Bid farewell to back pain and hello to productivity and well-being thanks to the OC12 Office Chair, featuring clever ergonomic design and self-adaptive lumbar support. A great choice for extended hours of sitting and working.


  • SELF-ADAPTIVE LUMBAR SUPPORT: The OC12 Office Chair is a perfect choice for long hours of working. Featuring an ergonomic dynamic self-adaptive lumbar support, it follows your body’s movement for optimal comfort and reduced back pain. Be productive and stay healthy with the OC12.
  • A VARIETY OF ADJUSTMENTS: Tailor-made for diverse body types, this chair boasts adjustable back height, a customizable headrest, and adaptable seat depth, allowing you to discover the perfect, most comfortable posture for you. The chair backrest can be adjusted to three settings — 96°,
    106°, and 116°.
  • ROBUST ERGONOMIC SEATING: This chair provides a secure and reliable ergonomic seating solution. Equipped with a Class 4 explosion-proof gas spring and a base tested up to 1136 kg of static pressure, this chair securely holds up to 300 lbs.


  • SKU: ERK-OC12-B
  • Overall Dimensions: 25.98"D x 25.98"W x 43.7-54"H
  • Weight: 61 lbs.
  • Seat Height: 17.6"-20.7"
  • Seat Depth: 14.5"-20"
  • Seat Width: 19.6"
  • Max. Weight Capacity: 300 lbs.
  • Armrest Type: 3D
  • Headrest Type: 2D
  • Recline: 96°-116°
  • Hydraulics Gas Piston: Class 4
  • Materials: Mesh
  • Box Dimensions: 22.83" x 20.08" x 22.83"
  • Box Weight: 61.73
  • Recommended height:4‘9‘’-6’1‘’

Buying Guide

  • About Color Difference

Please note that regarding color accuracy, we strive to display our products on our website as faithfully as possible, considering the variations in individual color perception due to lighting and screen differences.


  • Free Shipping (Lower 48 US States Only)
    We work with multiple third-party delivery partners for delivery and do not currently offer expedited or 2-day shipping. We have two default delivery services, limited to the lower 48 US states only. large item(s) is typically delivered via LTL freight shipping, and general item(s) is delivered via FedEx/UPS. It cannot be delivered to rural routes, Hawaii, Alaska, APO/FPO addresses, or P.O. boxes. Customers in such areas will be charged additional shipping fees. Please consult customer service for shipping quotes.
  • FedEx/UPS will dropped off the item(s) in front of the first ground-level entryway outside your home (front door, porch, or garage). Transit time for free standard shipping varies from 2-7 business days and is not guaranteed.
  • Free LTL freight delivery is Curbside Drop-Off, transit time for free standard shipping varies from 7-18 business days and is not guaranteed. Deliveries are not typically made at weekends or on holidays. The carrier will unload the item(s) to the ground for you at the loading area or in front of the building/house at the curb. This service does not include unpacking, assembly, or garbage removal. Due to the large volume and weight of the product, you may need some assistance from a family member or friend for the removal of the item(s) from the curbside to your house.
  • Paid upgrade services: We can provide upgrade services, including white gloves or other delivery services, if upgrading services it may cause extra charges. And for more detail please contact our customer service.
  • Once your order has been processed, we will email you order status updates and your tracking number. You can always access your account online and view your order status and tracking details there.


Return & Refund Policy (U.S. Only)

  • If you are not satisfied with the product, You have 30 days after delivery to return the product in its original condition. Return shipping costs are the responsibility of the customer. Upon return, your merchandise will be inspected and appropriate credits and/or refunds will be issued for the item(s) and any taxes due to be refunded in accordance with state law. A restocking fee will apply.

  • But if you have any concerns and wish to return the product, please reach out to our Customer Care Experts. We offer solutions to help you fix what’s wrong, so you can keep and love the things you buy. Because sometimes no return is the easiest return of all.
  • If the products are damaged/defective upon arrival, please call customer service or contact us via email within 72 hours.
  • Services: Services like assembly and installation, expedited shipping (i.e. next day or 2nd-day shipping), and extended warranty are non-refundable.
  • Note: We only accept returns if they are purchased directly from us on eurekaergonomic.com and flagship stores established in online marketplaces that are registered under the name of an Eureka Ergonomic entity. Please contact the relevant distributor if otherwise.
  • For other details about exceptions to our return policy, please check THIS LINK.
Free shipping On All Orders
30 Day Return Policy Easy Returns and Refunds
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OC12 Office Chair,Dynamic self-adaptive lumbar support
Regular price $359.99
Sale price $359.99 Regular price $499.99

Solve Lumbar Problems Caused by Extended Sitting

Dedicated to advancing waist protection technology through focused research and development, we leverage ergonomic principles and insights into bone development across various ages. Our innovative approach dynamically adjusts to lower back changes, actively accommodating your sitting posture. The result? Flexible lumbar spine support that alleviates pressure points on your spine.

Innovative Adaptive Lumbar Support

This office chair with lumbar support has an auto-chasing mechanism, which automatically follows the movement of the lower back, providing strong lumbar support throughout the day. The intensity of the lumbar support can be adjusted to meet individual needs. It fits the natural curvature of your spine and can help relieve back pain. It can alleviate up to 50% of the lumbar pressure caused by a sedentary office.

Scientific Support for the Lumbar Spine

"Sitting position without support to the lumbar spine creates nearly 50% increase in IVD (Inter Vertebral Lumbar Disc) pressure compared to sitting with lumbar support." - Professor Isabel L. Nunes - Ergonomics: A Systems Approach - Page 56

Multi-Functional Adjustment

The backrest of this ergonomic office chair can be reclined and locked within a range of 96°-116°. The angle and height adjustable headrest provides the most comfortable position for your neck. Seat lifts up and down and moves back and forth. Plus, it features 3D adjustable armrests for the ultimate in customized comfort in the office, or in front of your game!

High-Quality Seat Cushion for Long-term Sitting Comfort

A 2.76-inch high-density sponge cushion seat ensures prolonged sitting without collapse. Designed to accommodate various body types, it conforms to the contours of the buttocks and legs. Additionally, a 2-inch seat depth adjustment reduces pressure on the legs, enhancing overall comfort during extended periods of sitting.

Certified Quality

This home office chair features a gas rod crafted in Korea, certified by BIFMA/SGS for quality assurance. The Korean Filo Breathable Back Mesh ensures optimal air circulation, making it ideal for extended periods of sitting. The high-load base is equipped with silent pulleys, offering compression resistance and stability. Our office chairs are robust and durable, providing a quality guarantee for your well-being.


Customer Reviews

Based on 4 reviews
Jacob Birkett
Best home office investment ever

I have chronic spine issues. This chair is the most comfortable ever. It provides support for the entire spine, including the neck because the seat is so well padded and supportive. At first, I was hesitant about the price, and the truth is it was so worth it!!

Tim E.
A good fit

Needed to upgrade my home office chair. Something with good adjustments and lumbar support. This chair fell into my price point with all the necessary parts. I felt a little risky purchasing from and unknown company but took a chance.
It’s a good chair, hits in all the right places, great upright positioning with plenty of recline options, even far enough back to take a quick ten. Quite happy with it.
The bad side, parts of the assembly were ambiguous. So much so I put the seat on backwards and wondered for a few hours of sitting in it that something felt off. I turned the seat around and all of sudden it worked. I fit, it fit. And now back to work.

James Lehman

OC12, Office Chair

Thanks for the review , James! Hope you will enjoy your new chair!

Brotha Perry
almost perfect

you don't want to know

Thank you for your valuable feedback, Brotha! If you ever find a moment, please feel free to reach out to us via email at customerservice@eurekaergonomic.com. We're here to assist and see if there's anything we can do to enhance your experience with your new chair. Cheers!