SKU: 80306605954

Boss Diamond Task Chair In Black W/ Adjustable Arms (B9091-BK)

Sale price$106.20 Regular price$118.00
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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31

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Description

Boss Diamond Task Chair In Black W/ Adjustable Arms (B9091-BK)Five key benefits Posture supporting contoured back: The contoured back and seat promote proper posture to help prevent back strain during long work sessions. All day cushioning: Extra large seat and back cushions deliver comfort through extended seated tasks. Adjustable arms: Built in adjustable arms let you position support to match your desk height and reach. Pneumatic seat height adjustment: A pneumatic gas lift sets seat height to your

Five key benefits

  • Posture-supporting contoured back: The contoured back and seat promote proper posture to help prevent back strain during long work sessions.
  • All-day cushioning: Extra-large seat and back cushions deliver comfort through extended seated tasks.
  • Adjustable arms: Built-in adjustable arms let you position support to match your desk height and reach.
  • Pneumatic seat-height adjustment: A pneumatic gas lift sets seat height to your workstation in seconds.
  • Adjustable back height and depth: Tune back height and depth to fit your back and seating preference.

Product description

The Boss Diamond Task Chair (B9091-BK) is a mid-back ergonomic task chair built to keep you productive and comfortable through a full workday. Its contoured back and seat promote proper posture to help prevent back strain, while extra-large seat and back cushions provide comfort during long stretches at the desk.

Practical adjustability rounds out the design. Adjustable arms position support where you need it, a pneumatic gas lift handles seat-height adjustment, and the back height and depth adjust to suit your build and seating preference. The chair is finished in black upholstery and rides on a 25-inch nylon base with 2-inch dual-wheel nylon casters, with a 275 lb weight capacity.

The Diamond is offered in multiple colors, so it can be matched to an existing office color scheme.

Adjustments & features

  • Adjustable arms
  • Height-adjustable mechanism
  • Pneumatic gas lift seat-height adjustment
  • Adjustable back height and depth
  • Contoured back and seat
  • Extra-large seat and back cushions
  • Black upholstery
  • 25-inch nylon base
  • 2-inch dual-wheel nylon casters

Specifications

Model B9091-BK
UPC 751118909111
Arm Type Adjustable
Mechanism Type Height Adjustable
Pneumatic Gas Lift Yes
Weight Capacity 275 lb
Chair Base Nylon 25 Inch
Casters Dual Wheel Nylon 2 Inch
Certifications MAS Green Certified; CA TB117-2013

Who this chair is for

The Diamond Task Chair suits commercial offices outfitting workstations, conference areas, and shared task spaces, as well as home-office and remote professionals who want an adjustable, posture-supporting chair for daily desk work.

FAQ

What is the weight capacity?
The chair supports up to 275 lb.

Are the arms adjustable?
Yes. The chair has adjustable arms.

How is seat height adjusted?
Seat height is set with a pneumatic gas lift.

Can I adjust the back?
Yes. Both back height and back depth are adjustable.

Is this chair certified?
Yes. It is MAS Green Certified and meets CA TB117-2013.

Shipping

🚚 Free shipping within the continental United States, direct from the manufacturer.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 80306605954

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Product Reviews
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Verified Purchase
Emeraldcity
Louisville, US
★★★★★ 5
Fun toy
Color: Orange
My standard poodle loves this toy. It holds a charge for several hours and is well made
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
L
Verified Purchase
Lorraine Nathanson
Birmingham, US
★★★★★ 5
Colorful, Sturdy & Great Value
Color: Large Set of 4
Purchased for our two puppies when they were 2 months old and weighed about 14 pounds so theses balls were a little big for them to hold in their mouths but that didn't stop them from trying. While they did like these balls they much preferred softer soccer balls, the later of which did not hold up well at all. I had hoped they would play with these balls more when they were older but that hasn't happened 5 months later. I guess it's no fun if you can't tear the toy apart. Colors are very bright and they do enjoy chasing after them as long as I am the one rolling them across the room for them. Maybe when they progress to batting things with their paws they will start to do this for themselves.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2025
E
Verified Purchase
Erik
Louisville, US
★★★★★ 5
My pup loves them
Color: Large Set of 4
Colors are bright and my dog loves the squeaky! Good size no worries of choking.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 10, 2025
M
Verified Purchase
Mary Freeman
Carnegie, US
★★★★★ 5
amazing
Color: Large Set of 4
good buy worked well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
S
Verified Purchase
Steve
Bozeman, US
★★★★★ 4
3.5, Not 3.0
Color: Medium Set of 6
These balls were almost exactly what I needed. I was replacing my boy’s favorite ball, which is the 3” squeaky, spikey ball that fits in the chuck it launcher. Unfortunately I saw the shiny object next to it and because there were SIX balls and a dollar less, I failed to see that these are 3.5” balls instead of 3”…. Great balls but no fitty in the slingy. Buyer beware. No chuck it no problem. Save a buck.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026

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