FlexiSpot OC3 vs Herman Miller Cosm High Back

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

FlexiSpot

FlexiSpot OC3

$269.99

Herman Miller

Herman Miller Cosm High Back

$1,925 – $2,400

$1,655.01

lower starting price for FlexiSpot OC3 than Herman Miller Cosm High Back at the brand stores

Differences at a glance

FlexiSpot OC3Herman Miller Cosm High Back

Price: $269.99$1,925 – $2,400
Seat height: 18.5–22.4 in (47-57 cm)14.8–21.4 in (37.6–54.4 cm)
Seat depth: 15.9 in (40 cm)15.9 in (40.4 cm)
Load capacity: 300 lb (136 kg)350 lb (158.8 kg)
Arms: 2D; 3.9" height adjustmentLeaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"
Warranty: 5 Years12-year, 3-shift warranty, with limited exceptions

From 2 FlexiSpot OC3 and 33 Herman Miller Cosm High Back user reviews, most mentioned first. Green is liked, orange is a caution.

Comfort
FlexiSpot OC34 mentions
Herman Miller Cosm High Back31 mentions
Adjustability
FlexiSpot OC32 mentions
Herman Miller Cosm High Back31 mentions
Design
FlexiSpot OC34 mentions
Herman Miller Cosm High Back23 mentions
Recline and tilt
FlexiSpot OC30 mentions
Herman Miller Cosm High Back19 mentions
Price and value
FlexiSpot OC37 mentions
Herman Miller Cosm High Back11 mentions
Breathability
FlexiSpot OC36 mentions
Herman Miller Cosm High Back8 mentions

Which is cheaper, the FlexiSpot OC3 or the Herman Miller Cosm High Back?

The FlexiSpot OC3 is cheaper to start: $269.99 versus $1,925 for the Herman Miller Cosm High Back at the brand stores (Sep 2026).

What do owners mention most?

Price and value for the FlexiSpot OC3, and comfort for the Herman Miller Cosm High Back, based on review summaries.