FORTEM Coccyx Cushion XL with memory foam lumbar support and non-slip chair pad

The essentials

If you sit for long stretches at a desk (or in a car), the FORTEM Coccyx Cushion XL is the kind of add-on that aims to make your chair feel more supportive without changing the chair itself. It’s designed to work as both a seat cushion and a back/lumbar support pillow, so you can use it where you feel you need it most—at work, while gaming, or even on travel days.

On paper, the attraction is straightforward: memory foam that’s meant to keep its shape after repeated use, plus a non-slip base to help it stay put. It’s not a medical device, and it won’t magically fix a badly adjusted chair, but it could be a practical route if you’re trying to improve comfort and posture support with something simple.

What you’ll notice day to day

The cushion is built around memory foam, which typically means it responds to your body rather than feeling flat or overly springy. The idea here is that it conforms to you for longer periods, while still aiming not to flatten out over time.

A couple of real-life ways people tend to use this type of product: - At a desk: place it on the seat to give a steadier base, then position the back support section against your lower back while you work. - On a longer drive: use it as lumbar support so your back doesn’t slump as much when you’re sat in the same position.

The XL sizing also signals that it’s intended for people who prefer a larger contact area, or who want more coverage than standard chair cushions usually provide. That said, if your chair has very limited space between your seat and desk, you might find any XL cushion a touch harder to fit comfortably.

Key features that matter

A few design choices are likely to be the deciding factors.

First, the cushion is designed not to “flatten” even after multiple uses. Many cushions lose their shape over time, so if you’re buying with longevity in mind, this is one of the more relevant claims in the description.

Second, it has enhanced comfort for extended sitting. The foam is positioned as conforming to the body while offering ongoing support.

Third, the cover is removable and machine washable via unzip and wash. That’s a genuinely useful detail for everyday office life, especially if it’s going to be used in more than one setting (home office, gaming setup, or travel).

Finally, the cushion includes non-slip sitting and back rest. Even when a cushion is comfortable, it can become annoying if it slides around—so this is the kind of practical feature that tends to get noticed quickly.

Where it shines (and where it might not)

It makes sense if you’re looking for a versatile chair comfort add-on: office chair support during work hours, lumbar help for driving, and something travel-friendly for consistent seating support on planes or other trips.

It may not be the best match if your priority is a fully adjustable ergonomic setup. For example, if your chair’s height, seat depth, and lumbar adjustment (if any) are badly set, a cushion can help, but it’s unlikely to replace proper ergonomic positioning.

Also, because the comfort depends on how the memory foam conforms to you, results can vary. If you prefer a very firm, non-moulding feel, you might find memory foam a little too adaptive rather than rigid.

Tech specs

• Type: Office chair cushion and lumbar support pillow
• Design intent: Coccyx cushion / seat pad with back support
• Foam: Memory foam
• Size: XL
• Base: Non-slip
• Cover care: Removable, machine washable
• Use cases mentioned: Office chair back support, sitting cushion, driving lumbar support, travel support

A quick check before you buy

Before committing, it’s worth considering how you plan to use it most often. If it’s going on an office chair, check whether the cushion height and XL coverage will sit comfortably under you without pushing you forward or altering your posture in an unhelpful way.

It’s also smart to double-check the machine-wash routine you’ll actually stick to. The description says the cover is unzip and machine washable, which helps, but you’ll still want to keep up with cleaning if it’s going to be used daily.

And if you’re after support specifically for one problem area, think about whether you’ll use it mainly as a seat cushion or mainly as back/lumbar support—that choice affects how you’ll position it.

When it makes sense?

A solid pick if you want a memory foam chair pad that targets lumbar and sitting comfort, with a non-slip base and a removable, washable cover. It’s particularly suited to people doing lots of sitting—office work, gaming sessions, longer drives, or travel—who want consistent support without the cushion flattening out (at least, that’s the aim).

It’s not for you if you’re expecting it to compensate for a chair that’s fundamentally uncomfortable or incorrectly set up, or if you prefer a very firm support that doesn’t mould to your body.

Mini FAQ

Will it work as both a seat cushion and back support?

Yes, the description positions it as usable for sitting comfort or as a back/lumbar support pillow, including for work and driving.

Is the cover easy to clean?

The cover is described as removable and machine washable. You unzip it and wash it.

Is it suitable for travel?

The product is mentioned as being perfect for travel, providing stable chair back support on planes and other seating options.

Does it flatten over time?

The description specifically says it’s designed to keep its shape after multiple uses, but comfort and durability can still vary from person to person.

Is XL likely to fit all chairs?

It’s designed as an XL option, so it may suit those who want more coverage, but it could feel bulky in smaller chairs with tight clearance.