here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
Boss Office Products B580 The Web Back And Leather Plus Seat with Web Tension Knob 1 Unit Task Chair - Black
- NTR - No tools required for assembly.
- Beautifully upholstered with LeatherPlus.
- LeatherPlus is leather that is polyurethane infused for added softness and durability.
- Waterfall seat design eliminates leg fatigue.
- Ergonomic back design with lumbar support.
- Upright locking position.
- Adjustable tilt tension.
- Pneumatic gas lift seat height adjustment.
- Optional knee-tilt mechanism available model (B8602).(assembly required).
- Arm Height: 27.50" - 31.00" H
- Seat Size: 21.00" W x 19.50" D
- Seat Height: 20.00" - 23.50" H
- Overall size: 26.50" x 28.00"D x 45.00 - 48.50" H
+
+
Overview
Specs
Reviews (15)
See all Q & A 
Any questions? Ask CelesteSM will help you find out quickly.
Try me now
Sit in ultimate comfort with the Boss B580 Executive Chair. This well-ventilated web chair gives you the comfort you’d expect with genuine Leather Plus seat upholstery and a breathable web mesh back. Thanks to the pneumatic gas lift and tilt tension control, you can sit in the perfect position. The armrest height is also adjustable.
Ultimate comfortThe seat surface and the outer back areas are upholstered with genuine Leather Plus for great comfort. While the back is upholstered with a unique "web" mesh material, which lets air pass through to prevent body heat and moisture build up. The "Web" back also helps distribute weight evenly, and provides the perfect level of back support by conforming to each individual's back shape. The exclusive "Web Tension Knob" allows user to tighten or loosen the tension of the mesh material with a few simple twists.
Adjustable seat heightThe pneumatic gas lift allows you to adjust the seat height for maximum comfort. The hooded double wheel casters allow to you move around easily – always work in a personalized, optimized position.
Adjustable tilt tensionAdjust the rate of recline with the tilt tension control to minimize arm strain when you need to handle mountains of digital files on your PC.
Adjustable armrest heightThe height of the chair arms is adjustable, providing maximum support for part of your body weight when you rest your arms on the armrests.
Ultimate comfortThe seat surface and the outer back areas are upholstered with genuine Leather Plus for great comfort. While the back is upholstered with a unique "web" mesh material, which lets air pass through to prevent body heat and moisture build up. The "Web" back also helps distribute weight evenly, and provides the perfect level of back support by conforming to each individual's back shape. The exclusive "Web Tension Knob" allows user to tighten or loosen the tension of the mesh material with a few simple twists.
Adjustable seat heightThe pneumatic gas lift allows you to adjust the seat height for maximum comfort. The hooded double wheel casters allow to you move around easily – always work in a personalized, optimized position.
Adjustable tilt tensionAdjust the rate of recline with the tilt tension control to minimize arm strain when you need to handle mountains of digital files on your PC.
Adjustable armrest heightThe height of the chair arms is adjustable, providing maximum support for part of your body weight when you rest your arms on the armrests.Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 2 years
- Limited Warranty period (labor): 2 years
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-593-1888
- Support Email: info@bosschair.com
- Support Website
- View other products from BOSS Office Products
LOADING...
LOADING...
The Boss Office Products B580 is a black executive task chair with a LeatherPlus seat, web back, lumbar support, and pneumatic seat-height adjustment, suited to office users who want adjustable seating for desk work.
Recommended For
- Desk workers who prefer an airy mesh back with an upholstered seat and want to adjust the back’s web tension.
- People working at a fixed desk who want routine adjustments for seat height and arm height, plus casters for moving around the workspace.
- Office users who mainly sit upright and want adjustable tilt tension with an upright locking position rather than a highly configurable recline setup.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Adult office or study use as an upholstered executive swivel chair |
| Upholstery And Construction | LeatherPlus leather seat with mesh back and foam fill; nylon frame with plastic construction; black frame |
| Dimensions And Weight | Overall: 41.00–44.50 in H × 25.50 in W × 27.00 in D; seat: 20.5 in deep and 20.5 in long; backrest: 21 in wide × 28.5 in high; item weight: 34 lb |
| Seat And Arm Adjustments | Adjustable arms, swivel base, and tilt/recline operation with a manual handle; one reclining position |
| Capacity And Floor Use | Maximum weight recommendation of 275 lb; recommended for hard floors and indoor use |
| Assembly And Care | Assembly required; wipe clean |
| Model Identifiers | Boss Office Supplies B580, black |