The one that holds your posture up, not just your weight
The Ergo 3 is the newest chair in Karma’s Ergo line and the only one with the patented Double S-Ergo system — the contoured seat everyone knows, plus a matching backrest with adjustable lumbar inserts.
The one thing it does better: it fights the slump. Most lightweight chairs support the seat and leave the back to a flat sling, so the user gradually slides down and ends up looking at their own knees. The Ergo 3’s back inserts adjust and expand to the user’s height and weight to hold them upright — Karma’s stated aims are a stable posture, a better field of vision, and easier conversation. For anyone sitting in a chair for hours a day, that is the difference that shows.
It manages that without a weight penalty: “Ergo 3 is one of the lightest wheelchairs on the market, with a mass of the heaviest part just 9 kg in its base configuration.”
Who it suits
- Full-time or most-of-the-day users, where posture and pressure matter more than folding size
- Anyone who slides forward in their current chair or complains of lower back ache
- Users up to 125kg — more capacity than the Ergo Lite range
- People who need a crash-tested chair for travelling
Standard features
- Patented Double S-Ergo seat and backrest system
- Ergo Lumbar Support — adjustable, expandable back inserts
- Flip-up armrests and detachable swing-away footrests for side transfers
- Push & Pull attendant brake system
- Multi-functional side guards — inner pockets, outer reflective accents
- All movable parts picked out in high-visibility orange, so carers can see what to grab
Options
Drum brake system; Easy Fit tool-free adjustable legrests; tool-free adjustable footplates; Ergo anti-tippers, pelvic belt, cane holder, oxygen tank holder, IV pole, foldable headrest. Ask us before ordering.
Specification
| Seat width | 410mm (16″) or 460mm (18″) |
|---|---|
| Seat depth | 435mm |
| Front caster / rear wheel | 6″ / 14″ transit, or 7″ / 24″ self-propel |
| Seat surface height at front edge | 435mm with 6″ caster, 485mm with 7″ caster |
| Backrest height | 435mm |
| Armrest to seat distance | 220mm |
| Footrest to seat distance | 385 – 460mm |
| Seat plane angle | 6° |
| Seat to backrest angle | 104° |
| Overall L x W x H | 16″: 1050 x 575/595 x 860mm (6″ caster) or x 910mm (7″ caster). 18″: 1050 x 625/645 x 860mm or x 910mm |
| Folded L x W x H | 16″: 770 x 245 x 660mm quick-release, 770 x 285 x 700mm fixed 14″, 820 x 310 x 700mm fixed 24″. 18″: 770 x 245 x 700mm, 770 x 285 x 735mm, 820 x 310 x 735mm |
| Total mass | Transit 14″: 11.9kg (16″) / 12.2kg (18″). Self-propel 24″: 13.8kg (16″) / 14.1kg (18″) |
| Mass without wheels and footrests | Transit 14″: 8.0kg (16″) / 8.3kg (18″). Self-propel 24″: 8.4kg (16″) / 8.7kg (18″) |
| Maximum user weight | 125kg. Reduced to 115kg when fitted with Push & Pull attendant brakes — Karma Mobility UK list this model at 115kg |
| Frame material | Not published by Karma |
| Crash tested | Yes — Karma list this model as crash test approved. Certificate standard on request |
| Warranty | Karma Mobility UK manufacturer warranty — ask us for the current term on this model |
Karma’s published figures, Rev.01 Dec 2025, subject to ±10mm and ±0.5kg.
VAT relief
Prices exclude VAT. Karma wheelchairs qualify for VAT relief under HMRC Notice 701/7 where the user is chronically sick or disabled, or a charity buys on their behalf. The declaration is completed at checkout.
Get the fit right
The lumbar inserts only work if the seat width and back height are right for the person. Book a free equipment assessment and we will set it up properly rather than leave you to guess.
A 20″ (510mm) seat width is also made — ask us for a price. More in Lightweight Wheelchairs.
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