Choosing a pressure cushion for a chair should be simple. But it's surprisingly easy to buy the wrong one — a cushion that doesn't fit, or doesn't suit the person using it, gives no real protection at all. This guide covers the five things worth checking before you buy, so you get it right the first time.
5 Things to Check Before You Buy a Pressure Cushion
Most people skip straight to price or brand. These five checks take two minutes and save a lot of frustration.
1. Size — measure the seat first
A pressure cushion should sit flat within the chair seat, with a centimetre or two of clearance on either side. Measure your chair seat's width and depth in centimetres before you search. Most standard cushions are 43 cm × 43 cm, but chair seats vary. Dining chairs, armchairs, and wheelchairs all differ.
A cushion that overhangs the seat edges lifts the sitter forward and changes posture in ways that can actually increase pressure on the tailbone and thighs. Too small, and unprotected areas are left exposed.
2. Weight capacity — this matters more than most people realise
Every pressure cushion has a maximum weight rating. Exceed it and the cushion bottoms out — it compresses fully and gives no pressure relief at all. You're essentially sitting on a flat surface with a thin layer of foam between you and the chair.
Check the product's stated weight capacity and match it to the person's actual weight. If they're close to the upper limit, choose a cushion rated for the next weight tier up.
3. Non-slip base — essential for anyone who stands from a chair
For elderly users, a cushion that slides on the seat is a fall risk. Every time someone pushes themselves to standing, a cushion without a non-slip base can shift forward. That destabilises the movement at exactly the wrong moment.
Look for a rubberised or non-slip base as a standard feature, not an optional extra. If you're buying for a parent or family member who gets in and out of a chair independently, don't compromise on this one.
4. Cover type — waterproof and washable
For anyone with incontinence risk, a waterproof cover is essential. Moisture on a foam or gel cushion speeds up skin breakdown — the opposite of what the cushion is there to do.
Even where incontinence isn't a factor, a removable, machine-washable cover matters for basic hygiene. Covers collect perspiration and skin cells. If you can't wash it easily, the cushion becomes unhygienic within weeks.
5. Cushion type matched to your risk level (foam, gel, or air)
The three main types suit different situations. Foam cushions are lightweight and lower cost, suitable for low-to-medium risk users who are mostly mobile. Gel cushions offer better pressure redistribution for people who sit for longer periods or have reduced sensation. Air cell cushions give the highest level of adjustability and protection — typically recommended for higher-risk users or those with existing pressure injuries.
If you're unsure which type suits your situation, our pressure cushion collection includes product descriptions that match each type to risk level, or you can call us and we'll help you narrow it down.
What You Lose by Buying Off the Shelf
Generic seat cushions from hardware stores, discount retailers, or mass-market online marketplaces are designed for comfort, not pressure care. The difference matters.
A genuine pressure care cushion is designed to immerse and envelop the body — spreading weight across as large a surface area as possible. A generic foam pad sits under you and compresses without redistributing pressure. The bony prominences (tailbone, sitting bones, hips) still bear the full load.
There's also no clinical thinking behind most off-the-shelf options. Pressure care cushions are designed around tissue tolerance research: how long skin and underlying tissue can sustain pressure before breakdown begins. Generic cushions aren't.
If the goal is genuine pressure relief — not just a softer seat — it's worth spending a bit more on a purpose-built cushion from a reputable supplier.
Key Takeaways
- Measure your chair seat (width × depth in cm) before choosing a cushion size.
- Always check the weight capacity. A bottomed-out cushion gives no pressure relief.
- A non-slip base is essential for anyone who stands from a chair independently.
- Waterproof and washable covers are important for hygiene and skin protection.
- Match the cushion type (foam, gel, or air) to the person's actual risk level.
- Generic seat cushions don't redistribute pressure the way purpose-built cushions do.
Getting the right pressure cushion doesn't have to be complicated. Take two minutes to measure, check the weight rating, and match the type to the risk level — and you'll avoid the most common mistakes.
Browse our range of pressure care seat cushions, or read our guide on preventing pressure ulcers if you want more detail on how pressure injuries develop and how to stop them.