SIHOO M18 vs Knoll Life Chair

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

SIHOO

SIHOO M18

$289.99 – $299.99

Knoll

Knoll Life Chair

From $1,947

$1,657.01

lower starting price for SIHOO M18 than Knoll Life Chair at the brand stores

Differences at a glance

SIHOO M18Knoll Life Chair

Price: $289.99 – $299.99From $1,947
Seat height: 44–54 cm16.5–21.75 in (42-55 cm); 17" – 22.25"; 17.25–22.5 in (44-57 cm); 15.5" – 19.25"
Seat depth: 17.91 in (≈ 45.5 cm)15–19 in (38-48 cm)
Recline: Maximum 126° recline angleAngle Between Seat and Back 95° - 119°; Tilt Range of Back 24°
Arms: Adjustable armrests (Up and down)Arms available in fixed height, height-adjustable or high performance; high performance arms adjust 2.5" in armpad width (1.25" per side) and 3" armpad fore/aft movement; Arm Height from Floor 23.25" - 32.75" (height adjustable / high performance); 26.24" – 31.25" (fixed arm)
Headrest: Headrest moves 3.9" up and down and pivots 45°Optional headrest measures 9"W x 6" - 9"H
Lumbar support: Lumbar support adjusts vertically and horizontallyLumbar Support (Fixed) 7.5"; optional height adjustable lumbar (Exceeds 5.5" - 9.8"), 11.5" x 5.5"
Warranty: 3 yearsStructural components: 12 Years; Upholstery, textiles, leathers, finishes: 3 Years

From 5 SIHOO M18 and 4 Knoll Life Chair user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the SIHOO M18 or the Knoll Life Chair?

The SIHOO M18 is cheaper to start: $289.99 versus $1,947 for the Knoll Life Chair at the brand stores (Oct 2026).

Which has a headrest?

Both: the SIHOO M18 as standard and the Knoll Life Chair as an option.

What do owners mention most?

Price and value for the SIHOO M18, and design for the Knoll Life Chair, based on review summaries.