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 Sep 1 - Sep 6

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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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Based on 28 reviews
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I
Verified Purchase
Ian F. McCallum
Battle Creek, US
★★★★★ 5
Best leash we’ve owned in 36 years of dog parenting
Color: Green, Size: Large
Wow! My wife and I have been dog parents for 36 years (six dogs), and this is the best leash we’ve used. * Two handles: I used to think the second handle was unnecessary—now I can’t go back. * Comfort: Both handles are padded, so no hand strain on long walks or sudden pulls. * Tangle-resistant: The swivel between the leash and the loop that goes over the dog’s nose/neck keeps things from twisting, which makes control easier. * Secure fit: The sizing ring stays put, so it won’t pinch the dog’s nose. Note: There’s no backup clip to attach to a collar, so a determined dog could slip it if the loop is too loose. Adjusting the ring snugly has worked well for us. Given the quality and price, I can’t recommend this leash more highly. ★★★★★
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 22, 2025
M
Verified Purchase
MB of CA
San Leandro, US
★★★★★ 5
Slip lead that doesn't tangled and allows for a greater control
Color: Blue, Size: Large
I'm using this slip lead to volunteer at a dhelter - and what a difference it made! I really like this slip lead leash! Very easy to put it on a pup one-handed, the swivel and second handle make a huge difference! (The main shortcoming of a simpler version of a similar slip lead without a swivel is that it's getting tangled and/or twisted around). This is also high quality item - every detail is thlught through! Very comfortable to use, multiple color options - really nothing negative to complain about! Love this leash!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2026
J
Verified Purchase
Jasmine Unger
Omaha, US
★★★★★ 5
Great slip lead
Color: Blue, Size: Large
Love the double handle for walks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
P
Verified Purchase
Papa
West Palm Beach, US
★★★★★ 4
Second handle too high up on leash
Color: Black, Size: Large
Slip lead length provides your reactive dog with too much range to lunge. The second handle is great but it is too high up on the leash. If the slip lead length was shorter and the second handle was lower, this product would be awesome.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025
J
Verified Purchase
Jill Crowell
Fort Morgan, US
★★★★★ 5
Great lead alternative!
Color: Blue, Size: Large
This works great for an alternative to just a slip lead. I work in a kennel and it makes it a lot easier to grip for the dogs that pull a lot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026

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