SKU: 78919436097

Boss Heavy Duty Task Chair (B670-BK)

Sale price$165.60 Regular price$184.00
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Ships within 48 hours · Estimated delivery Oct 29 - Nov 3

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Description

Boss Heavy Duty Task Chair (B670-BK)Five key benefits Built for heavier use Rated to a 300 lb weight capacity with a steel wraparound frame and heavy duty components throughout. Lumbar focused comfort A curved ergonomic back delivers lumbar support during long work sessions. Lock anywhere recline A 2 paddle heavy duty spring mechanism with infinite lock holds the chair at any position within the tilt range. Durable upholstery High density foam seat finished in hard wearing Black Crepe

Five key benefits

  • Built for heavier use — Rated to a 300 lb weight capacity with a steel wraparound frame and heavy duty components throughout.
  • Lumbar-focused comfort — A curved ergonomic back delivers lumbar support during long work sessions.
  • Lock-anywhere recline — A 2 paddle heavy duty spring mechanism with infinite lock holds the chair at any position within the tilt range.
  • Durable upholstery — High density foam seat finished in hard-wearing Black Crepe fabric.
  • Stable, mobile base — A 27 inch black steel base rides on large heavy duty nylon casters.

Product description

The Boss B670-BK is a heavy duty task chair built for people who want a robust, comfortable seat with genuine ergonomic support. It pairs a high density foam seat with durable Black Crepe fabric upholstery and padded arms set into a steel wraparound style construction, giving the chair a solid, dependable feel through daily use.

A curved ergonomic back provides lumbar support where it matters most, while the pneumatic gas lift makes seat-height adjustment quick and easy. The 2 paddle heavy duty spring mechanism lets you recline and then lock the chair in any position within its tilt range, with tilt tension and an upright lock to fine-tune the feel.

Riding on a 27 inch black steel base with large heavy duty nylon casters and rated to a 300 lb weight capacity, the B670-BK is a sturdy choice for demanding workdays. It is MAS Green Certified and meets CA TB117-2013.

Adjustments & features

  • 2 paddle, heavy duty mechanism
  • Infinite lock — hold any position within the tilt range
  • Tilt tension adjustment
  • Upright lock
  • Pneumatic gas lift seat-height adjustment
  • Fixed arms (padded), steel wraparound construction
  • Curved ergonomic back for lumbar support
  • High density foam seat with Black Crepe fabric upholstery
  • Black steel 27 inch base
  • Large heavy duty nylon casters

Specifications

Back Adjustment No
Arm Type Fixed
Mechanism Type 2 paddle, heavy duty
Infinite Lock Yes
Knee Tilt No
Tilt Tension Yes
Pneumatic Gas Lift Yes
Upright Lock Yes
Seat Slider No
Chair Base Black Steel 27 inch
Casters Large Heavy Duty Nylon
Weight Capacity 300 lb
Certifications MAS Green Certified; CA TB117-2013
UPC 751118067019

Who this chair is for

The B670-BK suits commercial offices that need a durable, higher-capacity task chair for daily shifts, as well as home-office and remote professionals who want dependable lumbar support and a lock-anywhere recline in a seat rated to 300 lb.

FAQ

What is the weight capacity?
The chair is rated to 300 lb.

Can I lock the chair in a reclined position?
Yes. The 2 paddle heavy duty mechanism includes an infinite lock, so you can hold any position within the tilt range, plus an upright lock.

Are the arms adjustable?
No. The chair has fixed padded arms in a steel wraparound style construction.

How is the seat height adjusted?
Through a pneumatic gas lift.

Is the 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: 78919436097

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4.2 ★★★★★
Based on 14 reviews
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Susan L.
Waukegan, US
★★★★★ 5
Love these for beach foot protection!!
Size: 10-11 Women/9-10 Men, Color: Black-w001
These water shoes were perfect for our cruise to Grand Turk. The beach was a little rocky once in the water & the bottom of these shoes protected our feet and made it comfortable they dry quickly they are lightweight and easy to pack and carry in a beach bag. I bought two pair of the black one for me one for my husband, and he even wore them which was shocking into me and loved them.!!!! they don’t have walking support so they’re definitely something that you bring with you put on your feet before you enter like water where you can’t see the bottom or rocks/coral and they totally protect your foot on the bottom
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
T
Verified Purchase
TB
Lowell, US
★★★★★ 3
I received someone else’s returned product
Size: 7-8 Women/6-7 Men, Color: Sunset
The inner product packaging was already cut open and not sealed, and there was debris inside the socks: clear indicators that the pair I received was someone else’s return. They also run big and are very wide in the toe area. My daughter’s pair also ran big, but at least hers were sealed. Overall quality is a bit flimsy, so we’ll see how long they last.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
S
Verified Purchase
SH
Alexandria, US
★★★★★ 5
Decent water shoe
Size: 10-11 Women/9-10 Men, Color: N-laser Stripe
I have to admit, I was a bit skeptical about the quality of and comfort of these shoes because of the cheap price. However, I really do like them. They stay on my feet, are comfortably and non-binding, which is saying something because my feet have been pounded over the years. They even did well when I had to cross some rocks, trekking back to the kayak. Definitely a gods water shoe for a good price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
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Verified Purchase
Nettie
Natrona Heights, US
★★★★★ 5
Perfect!!!
Size: 7-8 Women/6-7 Men, Color: Black-w001
I absolutely love these water shoes. I wear them around the house, getting out of shower, even outside. I’m a stroke survivor that was paralyzed. One of the biggest hurdles of walking again is feeling the ground . One day I thought water shoes would work. After trying a few types I fell in love with these. So easy to put on. Comfortable. Feels one nothing on . I’m buying in multiple colors . Love love love these. Game changer for someone learning to walk again. My feet don’t sweat in them . I wear with and without socks . Easy to wash quick to wrong put and dry. Non slip.
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Reviewed in the United States on April 29, 2026
A
Verified Purchase
Alvaro
Port Orchard, US
★★★★★ 5
10/10
Number of Items: 6, Color: Black (6-pack), Size: X-Large
These black T shirts are a great buy. The quality is solid, the material feels comfortable, and they fit really well without being too tight or too loose. They hold their shape after washing and the color stays nice and dark. Perfect for everyday wear, whether it is for layering or just a simple outfit. The multipack makes it even better value for the price. Definitely worth it and I would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026

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