SIHOO B100 vs SIHOO B100 Pro: Which Should You Buy?

Key difference: The B100 Pro has 4D armrests where the B100 has 2D, but the B100 lists $60 lower.

Every figure for the B100 and B100 Pro comes from SIHOO's own US, UK and EU stores, and prices are regular US list prices rather than sale prices; Chairpedia has not tested either chair.

Why compare them

Why put the SIHOO B100 next to the SIHOO B100 Pro? The B100 Pro is the step-up version of the B100 on SIHOO's store, so this page is about what the extra money changes.

Specs side by side

Strengths and weaknesses

SIHOO B100

Strengths

• Lower list price: from $199.99 against $259.99 for the B100 Pro.
• Choice of a mesh or a cushioned seat, which the B100 Pro's store listing does not offer.

Weaknesses

• 2D armrests, against 4D on the B100 Pro.
• 2D headrest, against 3D on the B100 Pro.

SIHOO B100 Pro

Strengths

• 4D armrests, against 2D armrests on the B100.
• 3D headrest, against 2D on the B100.

Weaknesses

• Costs more: from $259.99 against $199.99 for the B100.
• No seat-type choice is listed for the B100 Pro, unlike the B100.

How they differ

Armrests. The SIHOO B100 lists “Flip-up 2D armrests”, the SIHOO B100 Pro “Enlarged 4D flip-up armrests”. With 4D armrests the B100 Pro lets you set the pads in more ways than the B100.

Price. At regular US list prices the SIHOO B100 is $199.99–$259.99 and the SIHOO B100 Pro is $259.99–$299.99. The B100 lists $60 below the B100 Pro, before any store sale. Price options: the B100 — $199.99–$259.99; the B100 Pro — Standard Version $259.99, Footrest Version $299.99 (Black and White).

Headrest. The SIHOO B100 lists “Wide 2D adjustable headrest”, the SIHOO B100 Pro “Wide 3D adjustable headrest”. The B100 Pro's headrest has more adjustment than the B100's.

Seat options. The B100 is sold with a mesh or a cushioned seat; the B100 Pro's store listing has no seat-type choice.

Seat size. Seat height: the SIHOO B100 lists “18.3–21.9 in (≈46–56 cm)”, the SIHOO B100 Pro nothing.

Other details. For the B100 and B100 Pro, the table above gives the lumbar support and recline in each brand's own wording.

Same on both. The B100 and B100 Pro list the same warranty (3 years), maximum load (330 lb, ≈150 kg), chair weight (36.4 lb, ≈16.5 kg) and Footrest Version option.

Who should buy which

• Pick the B100 over the B100 Pro if you want the lower price — the B100 lists $60 below the B100 Pro.
• Pick the B100 over the B100 Pro if you want the choice of a mesh or a cushioned seat.
• Pick the B100 Pro over the B100 if you want 4D armrests rather than 2D.
• Pick the B100 Pro over the B100 if you want a headrest with more adjustment (3D rather than 2D).

Not published by the brand (B100 vs B100 Pro): seat depth and seat width for the SIHOO B100; seat height, seat depth and seat width for the SIHOO B100 Pro.

Sources

• SIHOO B100 (compared here with the B100 Pro): Sihoo B100 Ergonomic Office Chair With Flip-Up Armrest – EU Sihoo official Shop; Sihoo B100 Ergonomic Office Chair With Flip-Up Armrest – Official US Sihoo Store, checked 2026-10-08; US list price from SIHOO US Official Store, checked 2026-10-08.
• SIHOO B100 Pro (compared here with the B100): Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest – Official US Sihoo Store, checked 2026-10-09; US list price from SIHOO US Official Store, checked 2026-10-09.
• Figures marked ≈ for the B100 and B100 Pro are Chairpedia's unit conversions, not brand figures.