SIHOO Doro C300 vs HBADA E3 Air: Which Should You Buy?

Key difference: The E3 Air reclines further (up to 140° against 130°) and carries a 5-year warranty on core parts; the C300 has no lead on the figures both brands list.

Figures for the SIHOO Doro C300 come from SIHOO's official pages and those for the HBADA E3 Air from HBADA's; prices are regular US list prices, and Chairpedia has not tested either chair.

Why compare them

Why put the SIHOO Doro C300 next to the HBADA E3 Air? The SIHOO Doro C300 and the HBADA E3 Air sit close together at list price, and both are mesh chairs with a headrest sold through each brand's own store.

Specs side by side

Strengths and weaknesses

SIHOO Doro C300

Strengths

• No lead over the E3 Air on price, warranty or adjustments.

Good to know

• If you lean far back, note it reclines up to 130°, against 140° on the E3 Air.
• Read the warranty terms: 3 years, against 5 years on the base, gas lift and casters; 3 years on other parts on the E3 Air.
• Compare the list prices first: it starts at $559.99, against $499 for the E3 Air.
• If you like to fine-tune the lumbar, note it works automatically with no manual setting listed ("Self-adaptive dynamic lumbar support"), unlike the E3 Air.
• If you lean back with your head supported a lot, note the headrest is 3D, against 4D on the E3 Air.
• If you like to lock the backrest at set angles, note it has 3 positions, against 5 on the E3 Air.

HBADA E3 Air

Strengths

• Deeper recline: up to 140° against 130° on the C300.
• Longer warranty: 5 years on the base, gas lift and casters; 3 years on other parts, against 3 years on the C300.
• Lower list price: from $499 against $559.99 for the C300.
• Lumbar adapts on its own and can also be set by hand ("3-Zone Floating Wing Lumbar Support System: height 5 cm (6 levels), forward/backward 3 cm (4 levels), 40° side-wing rotation (3 levels), 12° spring-based adaptive support"), unlike the C300.
• 4D headrest, against 3D on the C300.
• More recline lock positions: 5 against 3 on the C300.

Good to know

• Nothing the C300 clearly does better on the brands' own figures.

How they differ

Recline. The SIHOO Doro C300 lists “Up to 130°; positions at 110°, 120° and 130°”, the HBADA E3 Air “Up to 140°; 5 tilt levels”. The E3 Air leans back further than the C300.

Warranty. The SIHOO Doro C300 lists “3 years”, the HBADA E3 Air “5 years on the base, gas lift and casters; 3 years on other parts”. The E3 Air's cover runs longer than the C300's.

Price. At regular US list prices the SIHOO Doro C300 is $559.99–$569.99 and the HBADA E3 Air is $499–$549. The E3 Air lists about $60 below the C300, before any store sale. Price options: the C300 — $559.99–$569.99; the E3 Air — E3 Air 2026 Edition, Black or Gray: Without Footrest $499, With Footrest $549.

Lumbar support. The SIHOO Doro C300 lists “Self-adaptive dynamic lumbar support”, the HBADA E3 Air “3-Zone Floating Wing Lumbar Support System: height 5 cm (6 levels), forward/backward 3 cm (4 levels), 40° side-wing rotation (3 levels), 12° spring-based adaptive support”. The E3 Air's lumbar adjusts in more ways than the C300's.

Headrest. The SIHOO Doro C300 lists “3D Mechanical Headrest”, the HBADA E3 Air “4D Dual-Axis Adjustable Headrest: frame rotation 70°, axis rotation 70°, up/down 4 cm, forward/backward 7 cm”. The E3 Air's headrest has more adjustment than the C300's.

Seat size. Seat height: the SIHOO Doro C300 lists “18.50–21.65 in (47–55 cm)”, the HBADA E3 Air “≈18.3–21.7 in (46.5–55 cm)”. Seat width: the SIHOO Doro C300 lists “19.49 in (49.5 cm)”, the HBADA E3 Air “≈20.3 in (51.5 cm)”. Seat depth: the SIHOO Doro C300 lists “43.5–46 cm”, the HBADA E3 Air “≈16.9–18.9 in (43–48 cm)”.

Other details. For the C300 and E3 Air, the table above gives the armrests, maximum load and chair weight in each brand's own wording.

Same on both. The C300 and E3 Air list the same Footrest Version option.

Who should buy which

• Pick the C300 if its design and fit suit you better; on the brands' own figures it has no lead over the E3 Air.
• Pick the E3 Air over the C300 if you want a deeper recline (up to 140°).
• Pick the E3 Air over the C300 if you want a longer warranty (5 years on the base, gas lift and casters; 3 years on other parts).
• Pick the E3 Air over the C300 if you want the lower price — the E3 Air lists about $60 below the C300.

Not published by the brand (C300 vs E3 Air): chair weight for the HBADA E3 Air.

Sources

• SIHOO Doro C300 (compared here with the E3 Air): Doro C300 Ergonomic Office Chair – UK Sihoo official Shop; Sihoo Doro C300 Advanced Ergonomic Office Chair – Official US Sihoo Store, checked 2026-09-29; US list price from SIHOO US Official Store, checked 2026-10-07.
• HBADA E3 Air (compared here with the C300): HBADA E3 Air Ergonomic Office Chair 2026 Edition – HBADA EU official store; HBADA E3 Air Ergonomic Office Chair 2026 Edition – HBADA US official store, checked 2026-10-09; US list price from HBADA US Official Store, checked 2026-10-09.
• Figures marked ≈ for the C300 and E3 Air are Chairpedia's unit conversions, not brand figures.