Herman Miller Cosm High Back vs HÅG SoFi

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

Herman Miller

Herman Miller Cosm High Back

$1,925 – $2,400

HÅG / Flokk

HÅG SoFi

$1,689 – $1,979

2 years

longer warranty on Herman Miller Cosm High Back than HÅG SoFi (official terms)

Differences at a glance

Herman Miller Cosm High BackHÅG SoFi

Price: $1,925 – $2,400$1,689 – $1,979
Seat height: 14.8–21.4 in (37.6–54.4 cm)395–545 mm (15.6–21.5 in); 450–640 mm (17.7–25.2 in)
Seat depth: 15.9 in (40.4 cm)380–460 mm (15.0–18.1 in)
Load capacity: 350 lb (158.8 kg)300 lb (136 kg)
Arms: Leaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"HÅG SlideBack™ armrests: adjust height, width or slide backwards; optional extras (aluminium or plastic); arm height 185-300 mm
Warranty: 12-year, 3-shift warranty, with limited exceptions10-year guarantee against production defects (normal use up to 9 hours per day)

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

Which is cheaper, the Herman Miller Cosm High Back or the HÅG SoFi?

The HÅG SoFi is cheaper to start: $1,689 versus $1,925 for the Herman Miller Cosm High Back at the brand stores (Oct 2026).

Which has a higher weight capacity?

The Herman Miller Cosm High Back, rated for 350 lb versus 300 lb for the HÅG SoFi.

What do owners mention most?

Comfort for the Herman Miller Cosm High Back, and design for the HÅG SoFi, based on review summaries.