1 / 7FLEXISPOT OC8 SENTINEL Ergonomic Office Chair with Footrest
The FLEXISPOT OC8 SENTINEL is an ergonomic office chair with a footrest, adjustable lumbar support, headrest and armrests. Its range of adjustments suits buyers seeking a configurable desk chair, while customer feedback flags variation in perceived fit and stability.
At a glance
- Dual-wing lumbar support is described as adjustable forwards and backwards, up and down, and by angle, with a locking function.
- The backrest has three tilt levels and height adjustment, and the chair offers adjustable seat depth.
- The 3D headrest adjusts in height and angle, while the 3D armrests move up and down, forwards and backwards, and swivel.
- The listed upholstery is mesh, with a foam seat and alloy-steel frame.
Reference price: £299.99
Price checked: 14 Nov 2026
View offerAhead of Black FridayExplore the selectionPros and cons
Pros
- Several adjustable contact points let buyers tailor lumbar, neck and arm support as well as seat depth.
- The footrest is part of the named chair configuration, and the listed components include a lumbar cushion.
- Three tilt levels allow a choice of recline positions.
Technical specifications
13 specifications| Brand | FLEXISPOT |
|---|---|
| Model | C5B-Air-M2-NL03 |
| Form factor | Office Chair |
|---|---|
| Dimensions listed | 72 x 73 x 116.5 centimetres |
| Weight listed | 20 Kilograms |
| Assembly required | Yes |
| Seat depth | 45 centimetres |
|---|---|
| Reclining position count | 3 |
| Frame material | Alloy Steel |
|---|---|
| Seat material | Foam |
| Upholstery fabric | Mesh |
| Colour | Dark Black |
| Back style | Wing Back |
What to know before buying
Listing details to confirm
Listing details are contradictory or inconsistent: dimensions are given as both 74.5D x 72W x 111.5H centimetres and 72 x 73 x 116.5 centimetres, while the title describes an OC8 SENTINEL and the model field gives C5B-Air-M2-NL03. Customer feedback also differs on seat size, back support and adjustability, and reports stability concerns. Confirm the selected configuration and fit before buying.
What’s in the box
Included- Lumbar cushion
- Footrest
Who is it for?
A good fit for
- Desk-based users who want multiple adjustment points for lumbar, head and arm support.
- Buyers seeking an office chair with a footrest and adjustable seat depth.
Less suited to
- Buyers who need confirmed dimensions or a guaranteed seat fit without checking the configuration.
- Those who require consistently positive reports about chair stability.
Customer reviews on Amazon
- 5 stars
64% 64% - 4 stars
13% 13% - 3 stars
9% 9% - 2 stars
4% 4% - 1 star
10% 10%
Customer feedback includes reports of comfort and easy assembly, with some customers appreciating the 3D armrests and lumbar support. Experiences are mixed on adjustment range, back support, seat size and value, and there are stability concerns. Those differences matter because the chair's adjustable features do not guarantee an individual fit, and its stated dimensions are inconsistent.
Positive themes
- Some customers describe the chair as comfortable and easy to assemble.
- Some praise the 3D armrests and lumbar support.
Negative themes
- Some customers report that the chair does not stay in place.
Mixed feedback
- Customers disagree about seat size and back support, and some report limited seat-height options.
- Opinions on adjustment range and value differ.
Frequently asked questions
What can be adjusted on the OC8 SENTINEL?
The listing describes adjustable lumbar support, headrest and armrests, seat depth and backrest height, plus three recline levels.
Is a footrest included with this configuration?
The product title and size field identify a footrest configuration, and the listed included components name a footrest and lumbar cushion.
What should I check about its dimensions?
The listing gives two different overall dimension sets. Confirm the dimensions for the selected configuration before ordering.
What do customers report about comfort and fit?
Feedback describes the chair as comfortable for some, but opinions differ on seat size, back support and adjustment range.
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