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Herman Miller Cosm vs Haworth Fern

A detailed side-by-side comparison scored on 11 objective criteria.

HMHerman Miller Cosm

Herman Miller Cosm

Ergonomic Office
24/55
$1,465-$2,095
WINNER
HFHaworth Fern

Haworth Fern

Ergonomic Office
36.5/55
$1500
Criteria
Herman Miller Cosm
Haworth Fern
Total Score24/5536.5/55
Price Rating0/50/5
Seat Depth Adjustability0/53.5/5*
Height Range3/53/5
Lumbar Comfort2/54/5*
Armrests2/53/5*
Upper Back Support2/54/5*
Neck Support0/54/5*
Breathability5/5*2/5
Material Quality3/55/5*
Softness2/54/5*
Warranty5/5*4/5
Pros
  • +Outstanding mesh breathability
  • +12-year Herman Miller warranty
  • +Auto-adjusting Intercept suspension
  • +Zero adjustments needed by design
  • +Exceptional lumbar support with wave suspension technology
  • +Premium material quality - built to last decades
  • +Outstanding upper back support with flexible back panel
  • +Excellent headrest with adjustable neck support
Cons
  • -No seat depth adjustment
  • -Very expensive
  • -No manual lumbar adjustment
  • -Limited armrest options (no 4D)
  • -Only the longest seat depth setting leaves a gap for your butt - setting it slightly shorter works fine
  • -Fabric upholstery less breathable than full mesh options
  • -Premium price point ($1200+)
  • -No forward tilt mechanism
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