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FLEXISPOT ErgoX: 6 cm seat slide, adaptive lumbar

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This is the beige ErgoX with a footrest, FlexiSpot's mesh chair built around a T-shaped linkage and an adaptive lumbar cushion that moves with your back. Its strongest point for most buyers is fit: the seat slides over 6 cm and the height travels 9 cm. It suits people who want a chair that adapts to different body sizes and also lets them put their feet up.

Seat depth
6 cm range
Armrests
3D
Lumbar
Adaptive, three axes
Recline
Weight sensing, up to 135 degrees
Max load
136 kg

In its favour

  • The seat depth range of 6 cm is one of the larger ones stated in this guide.
  • The weight-sensing system balances the recline up to 135 degrees.
  • FlexiSpot states testing beyond 120,000 cycles and SGS BIFMA standards.

Good to know

  • The arms are 3D, not 4D, so there is no pivot.
  • No warranty period appears in the listing.
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Our take

The adaptive lumbar and back

FlexiSpot builds the lumbar support from three modules that respond horizontally, vertically and lengthways. Rather than setting a pad by hand, you sit back and the cushion follows your lower back as you shift. The backrest and seat use German-made mesh that FlexiSpot describes as breathable, sturdy and resistant to deformation. The title calls the backrest 5D adjustable, though the bullets do not spell out each direction.

Fit: seat, arms and headrest

The 6 cm seat depth range lets you pull the seat edge away from the backs of the knees if you are shorter, or extend it if you have long thighs. Seat height travels 9 cm. The 3D armrests move up and down, side to side and forward and back, but do not pivot. The headrest is listed as 3D, though the listing does not detail its directions.

Amazon lists the chair at 71 x 52 x 135 cm and 21 kg.

Recline and footrest

The back reclines to a maximum of 135 degrees, and a weight sensing system balances the chair as you lean back, so there is no tension knob to fiddle with. The footrest version adds a pull-out rest for your legs, which turns the recline into a proper break position. The maximum load is 136 kg.

Testing claims and support

FlexiSpot says the ErgoX meets SGS BIFMA standards and that its materials go through more than 120,000 cycles of performance testing. The listing promises customer service if problems arise but does not give a warranty period, which is worth checking before you buy.

Alternatives

The ProtoArc EC200 Pro adds 4D arms and a hand-set two-way lumbar, but is rated to only 100 kg. The Hbada E3 Air has 4D arms linked to its 140 degree recline and a 3-year warranty, without a stated seat slide in its listing. The Sihoo M57 is simpler, with a fixed seat but a stated 3-year warranty.

Verdict

Pick the ErgoX with footrest if seat depth adjustment and a hands-off adaptive lumbar matter most, and you like to recline with your feet up. If you want pivoting 4D arms, the ProtoArc EC200 Pro or Hbada E3 Air are worth a look, and the Sihoo M57 suits buyers who prefer a clear warranty over adjustment.

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Compared with alternatives in: Best office chairs under £500, Best office chairs for shorter people, Best office chairs with an adjustable headrest

Amazon listing title: FLEXISPOT ErgoX Ergonomic Office Chair with Footrest for Home Office, Desk Chair with 3D Armrests, 3D Headrest, 5D Adjustable Backrest, Breathable Seat, Maximum Load 136 kg,Mesh Office Chair,Beige