Vitra Physix vs SIHOO M18
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
$1,230.01
lower starting price for SIHOO M18 than Vitra Physix at the brand stores
Differences at a glance
Sources
- Factbook Physix 2026-EN (Vitra) ↗Checked Sep 29, 2026
- M18 Classic Ergonomischer Bürostuhl – SIHOO DE official store ↗Checked Oct 16, 2026
- Sihoo M18 Ergonomic Office Chair – Official US Sihoo Store ↗Checked Sep 29, 2026
- Manufacturer Warranty | Official Vitra Online Shop US ↗Checked Sep 29, 2026
- Vitra Online Shop US (price) ↗Checked Oct 2, 2026
Vitra PhysixSIHOO M18
- Price
- From $1,520$289.99 – $299.99
- Seat height
- 390–510 mm44–54 cm
- Seat depth
- 435 mm17.91 in (≈ 45.5 cm)
- Recline
- Synchronised movement, individual adjustment of backrest resistance and locking device in upright positionMaximum 126° recline angle
- Arms
- Flexible frame and armrests in polyamide (deep black or soft grey)Adjustable armrests (Up and down)
- Warranty
- 5 years3 years
Questions
Which is cheaper, the Vitra Physix or the SIHOO M18?
The SIHOO M18 is cheaper to start: $289.99 versus $1,520 for the Vitra Physix at the brand stores (Oct 2026).
What do owners mention most?
Adjustability for the Vitra Physix, and price and value for the SIHOO M18, based on review summaries.
Swap in a similar chair
Compare Vitra Physix with
Compare SIHOO M18 with
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- SIHOO M18 vs Herman Miller Aeron Arms: Adjustable armrests on SIHOO M18; Arm height 7.5–11.5 in on Herman Miller Aeron.
- SIHOO M18 vs Ticova Ergonomic Office Chair Ticova and SIHOO M18 both offer mesh backs and cushioned seats.
- SIHOO M18 vs Branch Ergonomic Chair Arms: Adjustable armrests on SIHOO M18; 3D removable armrests on Branch Ergonomic Chair.
- SIHOO M18 vs FlexiSpot OC3 Arms: Adjustable armrests on SIHOO M18; 2D on FlexiSpot OC3.