HÅG SoFi 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.

HÅG / Flokk

HÅG SoFi

$1,689 – $1,979

Herman Miller

Herman Miller Cosm High Back

$1,925 – $2,400

2 years

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

Differences at a glance

HÅG SoFiHerman Miller Cosm High Back

Price: $1,689 – $1,979$1,925 – $2,400
Seat height: 395–545 mm (15.6–21.5 in); 450–640 mm (17.7–25.2 in)14.8–21.4 in (37.6–54.4 cm)
Seat depth: 380–460 mm (15.0–18.1 in)15.9 in (40.4 cm)
Load capacity: 300 lb (136 kg)350 lb (158.8 kg)
Arms: HÅG SlideBack™ armrests: adjust height, width or slide backwards; optional extras (aluminium or plastic); arm height 185-300 mmLeaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"
Warranty: 10-year guarantee against production defects (normal use up to 9 hours per day)12-year, 3-shift warranty, with limited exceptions

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

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

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

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