ONYX Series, Office Chair

Regular price $129.99
Regular price $189.99 Sale price $129.99
Color: Gray

ONYX ergonomic office chair keeps you comfy and focused with lumbar support, made with airy mesh so you stay cool.


  • With classic color matching and versatile style, ONYX Office chair is an elegant addition to any office or workspace.
  • Ergonomic Self-adaptive sponge lumbar support reduces the pressure on the lower back and supports your waist.
  • The mesh design of the chair back is breathable and comfortable, avoiding sweating discomfort even during long work days.
  • Armrests with flip-up design allows it to be pushed under your desk when not in use, making it perfect for any small office or a home office setup.
  • Soft and comfortable sponge cushion provides you with comfortable support when you work.


  • SKU: ERK-OC6
  • Overall Dimensions: 25.59"D x 25.2"W x 39.37-43.32"H
  • Seat Height: 18.5''-21.46''
  • Seat Depth: 20.67''
  • Item Weight: 24.91 lbs
  • Max. Weight Capacity: 275 lbs
  • Color: Grey, Balck
  • Materials: Nylon
  • Back Style: Solid Back
  • Armrest: Flip-up Armrest
  • Gas Piston: Class 4
  • Special Feature: Ergonomic
  • Pattern: Solid
  • Box Dimensions: 24.41"L x 11.02"W x 23.23"H


  • Free Shipping & Free Return Shipping (Lower 48 US States Only) We know how important fast and free shipping is to our customers. We provide free shipping on all of our products. (Limited to the lower 48 US states only) Customers in Alaska and Hawaii will be charged additional shipping fees. Please contact the customer service team for a shipping quote at 844-416-2090.
  • Orders typically take 1-2 business days for processing and are shipped from the nearest fulfillment center. Standard shipping varies from 2-7 business days and is not guaranteed. Please note that shipping times are estimates and subject to potential delays beyond our control, such as weather, shipping issues, customs, or inventory shortages.
  • We rely on third-party mail couriers for delivery and do not currently offer expedited or 2-day shipping.
  • 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) Eureka Ergonomic stands behind the quality and innovative designs of our products with a 30-day risk-free trial period which guarantees free returns of most products returned in original condition.

  • 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.
  • 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. https://eurekaergonomic.com/pages/returns-refunds
Free Shipping
30 Days Return
Expert Service
ONYX Series, Office Chair,,Adjustable Lumbar Support,Grey
Regular price $129.99
Regular price $189.99 Sale price $129.99

Ergonomic Design

The product is meticulously designed with ergonomic principles in mind to provide optimal comfort and effectively reduce both lower back and lumbar pain.

High-Elastic Mesh Chair - Featuring Advanced

It's highly elastic specialized mesh fabric for superior breathability and lasting comfort, even during extended periods of sitting.

Adjustable Sponge Lumbar Support Provides Better Protection For Your Lumbar Spine

Soft sponge lumbar support conforms closely to your body, offering comfortable decompression to safeguard your spinal health.

Flip-up Armrests, A Space-Saving Solution

Adjust it up or down to cater to different preferences, offering comfortable arm support.

Powder-Free Sponge Reinforcement For Enhanced Comfort

The seat cushion utilizes a powder-free sponge, free from impurities, maintaining its shape even during extended use, ensuring superior resilience for added comfort.

Height Adjustable For Different Body Heights

Effortlessly adjust the height to ensure comfortable seating for both adults and children.

BIFMA Certified

This product meets BIFMA testing standards, ensuring reliable quality and making it your top choice for office chairs.


Customer Reviews

Based on 2 reviews
It’s good

It’s super easy to assemble. It was a bit more greyish than I was hoping for... But it’s okay looking. Overall very nice.

Your feedback about the color is appreciated, and we apologize that it was a bit different from your expectations. We strive to provide accurate product representations, but sometimes, colors may appear slightly different in person. It's good to hear as well that you still find the overall appearance of the product to be nice. Enjoy!

Great deal

Awesome Chair, looks like a turned a stormtrooper from star wars into a chair. The chair looks nice and is way sturdier than any other pricy chairs I've bought before

Love the way you described it, glad you find our chair to be awesome! Durability is a key factor for us, and we're glad that our chair meets your standards. Thank you!