# FLEXISPOT 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.

- [Original product page](https://bargainpostbox.co.uk/product/flexispot-oc8-sentinel-office-chair-footrest)
- [View offer](https://bargainpostbox.co.uk/visit/flexispot-oc8-sentinel-office-chair-footrest)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: FLEXISPOT
- Model: C5B-Air-M2-NL03
- Category: Home & Kitchen > Furniture > Chairs & Armchairs
- Price: 218.46 GBP
- Previous price: 299.99 GBP
- Discount: 27%
- Price checked: 2026-11-14T10:11:40.838Z
- Rating: 4.2 / 5
- Reviews: 92

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## 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.

## 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.

## Specifications

### Identity
- Brand: FLEXISPOT
- Model: C5B-Air-M2-NL03
### Dimensions and installation
- Form factor: Office Chair
- Dimensions listed: 72 x 73 x 116.5 centimetres
- Weight listed: 20 Kilograms
- Assembly required: Yes
### Adjustments and fit
- Seat depth: 45 centimetres
- Reclining position count: 3
### Materials and finish
- Frame material: Alloy Steel
- Seat material: Foam
- Upholstery fabric: Mesh
- Colour: Dark Black
- Back style: Wing Back

## Before you buy

- 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.

## In the box

- Lumbar cushion (Included)
- Footrest (Included)

## 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 feedback

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.
- Positive themes: 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.
- Mixed feedback: 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.

## Alternative options

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- [TRALT Office Chair - Ergonomic Chair - 330LBS Desk Chairs Mesh Gaming Chair - Home Office Desk Chairs Height Adjustable Executive Computer Chair with Flip-Up Arms for Long Hours Work \(Black\)](https://bargainpostbox.co.uk/visit/flexispot-oc8-sentinel-office-chair-footrest)
- [SIHOO M102C Ergonomic Mesh Office Chair, 3D Armrests, High Back \| Up & Down Lumbar Support, Swivel Computer Task Chair, Designed for All-Day Comfort, Black](https://bargainpostbox.co.uk/visit/flexispot-oc8-sentinel-office-chair-footrest)
- [COLAMY Ergonomic Mesh Office Chair with Footrest, Executive High Back Computer Desk Chair with Wide Headrest and Adjustable 3D Arms, Backrest, Tilt Lock and Lumbar Support\(Black\)](https://bargainpostbox.co.uk/visit/flexispot-oc8-sentinel-office-chair-footrest)
- [FLEXISPOT BS8 PRO Ergonomic Office Chair, Desk Chair with Dual Wing Lumbar Support, 3D Headrest, 3D Armrests & Adjustable Seat Depth, 3-Level Tilt & Height-Adjustable Backrest \(Grey\)](https://bargainpostbox.co.uk/visit/flexispot-bs8-pro-ergonomic-office-chair-grey)
- [FLEXISPOT ErgoX Ergonomic Office Chair, Executive Mesh Desk Chair with Height Adjustable Seat, Headrest, Armrests & Independent Lumbar Support, Swivel Task Chair, Black](https://bargainpostbox.co.uk/visit/flexispot-oc8-sentinel-office-chair-footrest)

## Images

![FLEXISPOT OC8 SENTINEL Ergonomic Office Chair with Footrest — 1](https://bargainpostbox.co.uk/i/wtmpRlSsIflqQe6FbXoEsoWf7VXJdPVd4DXl1l5Y3H8iRhXIvr_SLmE9_rwsgEjNp-UeyWliseweaB89fCIwn5wjvwi2USNodTah2-W7jqwM9VxBaqDwt6b_.jpg)

![FLEXISPOT OC8 SENTINEL Ergonomic Office Chair with Footrest — 2](https://bargainpostbox.co.uk/i/fV5FOyAyuweoS_7dqvwhJxy4TYus4e6lqJtePCuPgr_76iyAY2_NhRg2BB-Lh6qV__J1SinoRywpj1qkFlQD4Tqsg8MjNdaU01dRsLzUH4MFbbhyv7lJbV19.jpg)

![FLEXISPOT OC8 SENTINEL Ergonomic Office Chair with Footrest — 3](https://bargainpostbox.co.uk/i/UfbkhSzEXbsnNvI3gRJY5UOwo9c4wYkAD-Y8oGaC7xMnNJK8blDTyx82S05VP1jv8OSEMm08IWSP8vGuvJMA3TouTsTih1u2-1UQHLNvxnvqYhr73HdQcPab.jpg)

![FLEXISPOT OC8 SENTINEL Ergonomic Office Chair with Footrest — 4](https://bargainpostbox.co.uk/i/sITx1c56ANk_KUqvwvC0dRWGwBzZdwI3aLFDbkp64P6e1FFCrZxNrrqefsiY4x0HI_UIMEMuFGDb550uL90alhmZWkLOWX3eXlNUYhIaXt6xjG6--Vw-xULJ.jpg)

![FLEXISPOT OC8 SENTINEL Ergonomic Office Chair with Footrest — 5](https://bargainpostbox.co.uk/i/IM4h2FcUzhlrhph_x8RUPSxrfZD1n9DZXULkC_RqJpKt6gq1YHeuXW6XWfbiSH5y-UKqWWALlb53XkmY_dVrJYi8RZVWVELlUnxC4Y1PkSsv7t1H97pkyb6P.jpg)

![FLEXISPOT OC8 SENTINEL Ergonomic Office Chair with Footrest — 6](https://bargainpostbox.co.uk/i/m8O6AguXfSYKY-64a8NN1cLEYnWEIqewqU_tMIO7WQb10HkT824YWgW6IEjLHMIjfjLBblqz-qPzj7VfeLwjMuvHkBOJj2An4TC_k_95hrAatFvSkf7FXmUr.jpg)

![FLEXISPOT OC8 SENTINEL Ergonomic Office Chair with Footrest — 7](https://bargainpostbox.co.uk/i/kkR07NlTVXU7ts-8WpfPD8_ICdygTLdPYSe3wQyK8VDRKrg3UCwoV3CDL3t0knxiOWDgUwLj0D1RsAcdxTK_74YgA6fEIFwgGBvzTcN6XY7wxt_DHCaM1yaS.jpg)