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Mathias Mason, Low Back Office Chair

$299 $369
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Color: Black

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Description

Mason is a low-profile office chair that combines sculpted wood curves with generous cushioning and padded armrests. Wrapped in premium faux leather and finished with a distinctive wood structure, it brings a refined, furniture-inspired character to modern workspaces.

Features

  • A Distinctive Expression of the Mathias Design: Its low-back silhouette creates a lighter, more open feel while preserving the signature curves and balanced proportions of the Mathias collection.
  • Sculpted Wood Structure: The curved wood structure gives Mason a distinctive furniture-inspired look, while the soft upholstery adds a comfortable touch.
  • FSC® Certified Wood: We use FSC® certified wood, which ensures that our pieces are made sustainably, and the world's forest resources are used responsibly.
  • Premium Faux Leather: Premium faux leather upholstery offers a smooth, refined finish that complements the warmth of the curved wood structure.
  • Practical Adjustments, Effortlessly Integrated: Adjust the seat height by up to 3 1/8" and rotate 360° to suit your workspace. Unlock the recline function to lean back freely between 95° and 115°, or lock the chair in its upright position for focused work.

Specification

  • SKU: ERK-OC97-B

Mason

  • Color: Black/Brown/Beige
  • General Dimensions: 25" W x 26" D x 33.88"-37" H
  • Item Weight: 34.17 lbs.
  • Recommended Height: 3'11"-5'11"
  • Weight Capacity: 330 lbs.
  • Seat Height: 18.13"-21.25"
  • Seat Depth: 17.75"
  • Seat Width: 20.88"
  • Upholstery: Premium Faux Leather
  • Cushion Material: High-Density Foam
  • Armrest Type: Padded Armrests with Electroplated Tubular Metal Frames
  • Tilt Mechanism: 95° Upright Lock; 95°–115° Free Recline
  • Adjustments: Seat Height Adjustment, 360° Rotation
  • Box Dimensions: 32.28"L x 25.98"W x 19.69"H
  • Box Weight: 39.82 lbs.
  • Warranty: 5-Year Limited Warranty

Installation Manual

Shipping

Free Standard Shipping (Lower 48 US States Only)

  • Standard Shipping: Transit time is approximately 3-7 days (not guaranteed). FedEx/UPS will drop off the item(s) at the first ground-level entryway outside your home (front door, porch, or garage).
  • Large Items: Shipped via LTL Freight and typically arrive within 7-21 days. The carrier will unload the item(s) at the curb or loading area, but this service does not include unpacking, assembly, or debris removal. You’ll need to move the item(s) inside, so please plan accordingly.
  • Want a White Glove Experience? We offer premium delivery services, including white glove options, for an additional fee. Contact our customer experience team to learn more.
  • Obvious Shipping Damage
    If you receive any LTL shipment and notice any damages to the outer cartons, please refuse the delivery immediately, do not sign any paperwork provided by the carrier, and contact us right away.
  • Live in Hawaii or Alaska? While free shipping isn’t available, we can still ship to you! Reach out to our customer experience team for a custom quote.
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Sculpted Wood, Shaped with Purpose


The curved wood structure gives Mason its distinctive silhouette, balancing natural material character with the soft, rounded lines of the chair.

Flexible Seating for Everyday Work

From reclining and seat-height adjustment to 360° swivel and smooth-rolling casters, Mason offers practical flexibility to suit your everyday workspace.

Details That Bring the Design Together 

From the refined metal finish to the carefully designed base and smooth-rolling casters, every detail complements Mason’s sculpted wood structure, balancing practical function with a distinctive, furniture-inspired aesthetic. 
Dimensions

Frequently Asked Questions

What materials are used in the Mason office chair?

Premium faux leather upholstery covers high-density foam cushioning, paired with a sculpted wood structure and metal details. The combination gives Mason its curved, furniture-inspired appearance. When coordinating your workspace, consider both the upholstery color and the visible wood grain, especially if the chair will sit beside other wood furniture.

What are the chair and seat dimensions?

Overall dimensions are 25 inches wide, 26 inches deep, and 33.88–37 inches high. The seat measures 20.88 inches wide and 17.75 inches deep. Compare these measurements with your available desk space and a chair you already find comfortable, allowing additional room behind the seat for reclining and moving around.

Can I adjust the seat height and swivel the chair?

Seat height adjusts from 18.13 to 21.25 inches, and the chair swivels through 360°. Set the height to suit your desk and seated position, then use the swivel to turn toward nearby work surfaces. Check your desk opening and armrest clearance when planning how the chair will fit beneath it.

How does the recline function work?

Pulling the tilt lever out allows you to rock freely between 95° and 115°. To return to an upright working posture, push the lever in to lock the chair securely at 95°. Please note that the chair cannot be locked at intermediate angles or at the maximum 115° recline. Ensure there is sufficient clearance behind the chair before leaning back, and review the operating instructions before your first use.

What is the weight capacity of the Mason chair?

Mason supports up to 330 lbs. When choosing a chair, consider this capacity alongside the seat width, seat depth, and height adjustment range. Comparing those measurements with your body proportions and desk setup gives you a more useful starting point for assessing fit before bringing the chair into your workspace.

What kind of armrests does the chair have?

Padded armrests sit on electroplated tubular metal frames, combining a cushioned contact surface with a polished structural detail. They complement the upholstered seat and curved wood shell. When matching the chair to a desk, allow room for the armrests and check how you prefer to position your forearms while working.

Which upholstery colors can I choose?

Black, Brown, and Beige are the upholstery color options. Consider the color alongside the chair’s exposed wood structure and metal frame when planning your room. Review the product images for your preferred option, and compare it with nearby furniture under your usual lighting before deciding which finish best suits the space.

Where can I find help with assembling the Mason chair?

Our assembly video is linked in the Installation Manual section of the product page to help you follow the setup process. Review it before starting, organize the components, and work through the instructions in order. If a part or step is unclear, contact us with the product name and a photo so we can assist.