Steelcase Leap vs Haworth Soji XL
Two of the ergonomic office chairs in our best ergonomic office chairs: herman miller, steelcase, haworth & more comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.
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Best for: 4D arms, height-adjustable lumbar, 400 lb
Check price at AmazonBest for: 24.5" wide seat warrantied to 600 lb
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | Steelcase Leap | Haworth Soji XL | Weight |
|---|---|---|---|
| Weight capacityThe heaviest user the maker rates or warranties the chair for. Anything above 400 lb scores the same as 400 lb. | 400 lb | 600 lb | 25% |
| Warranty lengthYears of coverage on the chair's frame and mechanism, as the maker states it. | 12 yr | 12 yr | 20% |
| Seat depth adjustmentHow far the seat slides front to back. A fixed seat scores 0; longer travel fits more leg lengths. Metric figures converted (25.4 mm = 1 in). | 2.95 in | 2.5 in | 15% |
| Maximum seat heightFloor to top of seat at its highest, with the standard cylinder. Taller users need more. | 21.3 in | 21 in | 10% |
| Minimum seat heightFloor to top of seat at its lowest. Shorter users need less to keep feet flat. | 16.1 in | 16.4 in | 10% |
| Armrest adjustmentsThe number of directions the armrests move (4D = up/down, forward/back, side to side, pivot) as the maker labels them. Unlabeled arms score as the lowest figure. | 4 D | 4 D | 10% |
| Adjustable lumbarYes when the maker lists lumbar support you can adjust (standard or as an option). | Yes | Yes | 5% |
| Forward tiltYes when the maker offers a forward seat tilt, useful for upright, task-focused work. | Not listed | Not listed | 5% |
| Seat height | 410–540 mm (16.1"–21.3") | Not listed | info |
| Usable seat depth | 415–490 mm (16.3"–19.3") | Not listed | info |
| Arm height from seat | 160–260 mm | Not listed | info |
| Width between arms | 410–510 mm | Not listed | info |
| Weight | Tested to 400 lb (EU shop lists 150 kg) | Warrantied to 600 lb | info |
| Seat width | Not listed | 24.5" | info |
| Seat depth | Not listed | 16.25"–18.75" | info |
| Width between armrests | Not listed | 17.1"–20.1" | info |
| ErgoPick score | 8.5/10 | 8.1/10 | 100% |
Where each one comes out ahead
Steelcase Leap
Better published figure on: Seat depth adjustment, Maximum seat height, Minimum seat height.
What we like
Watch out for
Haworth Soji XL
Better published figure on: Weight capacity.
What we like
- Top weight capacity in this comparison (600 lb)
Watch out for
Verdict
On published specs, the Steelcase Leap scores higher (8.5 vs 8.1). Specs don't capture sound character or feel, so weigh the pros and cons above too.
- Choose the Steelcase Leap if this sounds like you: 4D arms, height-adjustable lumbar, 400 lb.
- Choose the Haworth Soji XL if this sounds like you: 24.5" wide seat warrantied to 600 lb.
- Steelcase Leap: Steelcase: Leap cut sheet
- Steelcase Leap: Steelcase Shop: Leap
- Haworth Soji XL: Haworth: Soji XL Office Chair