Reviewed by
Jarrett Dottin
Licensed Occupational Therapist dedicated to helping others live their best lives. Certified lymphedema therapist and amazon affiliate who has tested over 1,000 different products. About JD →
The Everlasting Comfort Doctor Recommended Memory Foam Seat Cushion is worth buying if you sit for long stretches at a desk or in a car and your tailbone pays for it. It’s 100% memory foam with a U-shaped coccyx cutout, and it’s Amazon’s #1 bestseller in cushions with over 105,000 reviews. Buy it.
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How this review was made: written from my own video review of this product. Every opinion here is my own, from using it myself.
Quick Verdict
Fist straight into the foam, and it pushes back, that’s 100% memory foam with real rebound, not the polyurethane that collapses in a week. Sit on it and your hips stay level, weight spreads across the sit bones instead of concentrating into two pressure points.
Buy if you:
- Sit 6+ hours a day at a desk and your tailbone aches by 3pm
- Drive long routes or commute and want the same cushion in the car
- Deal with coccyx or sciatica pain and need the U-shaped cutout
- Want a cover you can machine wash instead of spot-cleaning forever
Skip if you:
- Want a cushion that disappears under you. Dense foam sits you noticeably higher, and desk and armrest height have to be re-set
- Need a gel or air cell cushion for true pressure injury prevention. This is memory foam, not a clinical offloading seat
- Only sit in short bursts. You won’t feel the difference
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| Fill | 100% memory foam |
|---|---|
| Shape | Ergonomic U-shaped coccyx cutout |
| Cover | Breathable, machine washable, non-slip bottom |
| Color / size | Black, Large |
| Use with | Office chair, car seat, gaming chair, wheelchair, airplane |
The Squeeze Test Never Lies
Stop buying seat cushions until you see this one get punched. That’s the whole demo in my video: fist straight into the foam on the Everlasting Comfort cushion you can see on Amazon, and watching how it comes back. Real memory foam rebounds slow and even. The cheap stuff folds, creases, and stays creased. That’s the one test I’d run on any cushion before I spent money on it.
Doctor-recommended is a label anyone can slap on packaging, but 105,000 reviews on a seat cushion is a durability signal you can’t fake, if the foam were flattening in three weeks, the one-star wave would have buried it years ago.
First Hour On It
The non-slip bottom is the detail most reviews skip, and it’s the one that determines whether you’re still using this in month two. A cushion that walks forward every time you stand up gets thrown in a closet, I’ve seen it happen with every gripless pad I’ve tested.
The U-shaped cutout must face backward, the open notch sits under your tailbone so there’s nothing pressing on the coccyx. The open notch sits under your tailbone so there’s nothing pressing on the coccyx. Put it on backwards and you’ve turned a pressure-relief cushion into a plain pad. As an OT I watch people get this wrong constantly.
Does Memory Foam Flatten Out?
Cheap foam goes flat in about a week. That’s the failure mode, and it’s why the squeeze test is worth doing. Bargain cushions are usually low-density polyurethane dressed up as memory foam. You compress it, the cell structure breaks down, and three weeks later you’re sitting on your chair again with a sad pancake between you and it.
This one is 100% memory foam, no shredded filler, no foam-and-fiber blend. Density is the entire durability story with a seat cushion. The cover being machine washable helps the other half of longevity, because what actually kills most cushions isn’t the foam, it’s that the cover gets gross and you throw the whole thing out.
Sit Bones, Hips, and Why the Cutout Works
Weight distributes across the sit bones instead of concentrating into pressure spots, because the U-shaped cutout removes contact under the fragile coccyx entirely.
You’re meant to bear weight through your ischial tuberosities, the two bony points at the bottom of your pelvis. The sit bones. They’re built for load. Your coccyx is not. It’s a small, fragile terminal bone sitting right behind them, and on a flat chair it takes pressure it was never designed to take, especially if you slouch back onto a posterior pelvic tilt, which is what almost everyone does by hour four of a workday.
The U-shaped cutout removes the material under the coccyx entirely. No contact means no load. Meanwhile the memory foam conforms under the sit bones and spreads the load over a bigger surface area instead of concentrating it into two hot spots. Lower peak pressure, same bodyweight. That’s the mechanism.
And then there’s the level part. A dense cushion that holds its shape keeps both hips at the same height. When foam collapses unevenly, one side drops, your pelvis tilts laterally, and your lumbar spine compensates with a sidebend you hold all day. That’s how a seat problem becomes a low back problem. Even support is the goal, and even support is a density question.
Same reason it works in a car. Car seats are bucketed, so your pelvis sinks and rotates back. A firm cushion on top resets the base. The listing calls out long drives and commutes, and that’s exactly where I’d put a second one.
A Cushion Is Not a Posture Fix
The big misconception: people buy a seat cushion expecting their back pain to vanish. It won’t, on its own. A cushion manages pressure at the seat interface. It doesn’t change how long you sit, how far forward your monitor is, or whether your feet reach the floor.
Here’s the one that catches everybody: adding a cushion raises your seat height. If your desk and armrests stay where they were, you’ve just created a new shoulder-elevation problem while solving a tailbone problem. Re-set your chair after you add it.
Where It Sits Against Everything Else
Cushions sort into three buckets: foam, gel, and air cell. Gel runs cooler but tends to bottom out under a heavier user. Air cell is the clinical option for genuine pressure injury risk and costs many times this. Memory foam is the middle, and for an able-bodied desk worker or driver it’s the right middle.
Worth knowing on price: this one moves a lot. It’s sitting right around its three-month normal today, but it’s been meaningfully cheaper at points, so check the live price on Amazon before you assume. It’s currently ranked #115 in Office Products against a 90-day average of #137, so it’s selling harder lately, with more than 10,000 bought in the past month.
What I’d Tell a Patient
If tailbone pressure is the thing wrecking your workday, this is the cheapest intervention that reliably changes something. It’s real foam, the cutout is in the right place, the cover washes, and the bottom doesn’t slide. Those four things are the whole checklist.
What it isn’t: a clinical offloading seat, a lumbar support, or a reason to sit for nine straight hours. Pair it with standing up every 30 to 45 minutes and the tailbone pressure that was wrecking your afternoons largely stops being a problem. That’s a specific, achievable outcome for $30-something.
Pros
- Real memory foam that rebounds under a full fist, not the cheap stuff that goes flat in a week
- U-shaped cutout genuinely removes coccyx contact instead of just looking ergonomic
- Hips stay even and level, weight spread across the sit bones
- Machine washable breathable cover with a non-slip bottom
- #1 bestseller with over 105,000 reviews and 10,000+ bought last month
Cons
- Raises your seat height, so desk and armrests need re-setting or you trade one problem for another
- Cutout orientation isn’t obvious, and backwards means you lose the entire benefit
- Memory foam, not gel or air cell, so it’s not a clinical pressure injury solution
- Price swings a lot, so buying on the wrong day costs you
Frequently Asked Questions
Will it fit a bucket-style car seat and an office chair both?
Yes, it’s built for both, plus gaming chairs, airplane seats, and stadium benches. In a bucket seat the firm base sits on top of the contour rather than sinking into it. If you’re splitting time between desk and car, two cushions beats carrying one back and forth.
How do I clean it?
Unzip the cover and machine wash it. The foam itself never goes in water. If the foam picks up odor, air it out flat for a day instead of soaking it, because saturated memory foam takes forever to dry and can mildew inside.
Can I use it in a wheelchair?
For occasional or short-duration wheelchair use, yes, it’s listed for it. For full-time wheelchair users with any skin integrity risk, talk to your OT or seating specialist first. Full-time seating needs a prescribed pressure-redistribution cushion, and memory foam isn’t that.
Does it get hot after a few hours?
Memory foam retains more heat than gel by nature, which is why the breathable cover matters here. If you run warm and sit in a hot room all day, a gel-top cushion will stay cooler. For a normal air-conditioned office it’s a non-issue.
Get it now
Everlasting Comfort Memory Foam Seat Cushion
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About the reviewer
Jarrett Dottin
Licensed Occupational Therapist dedicated to helping others live their best lives. Certified lymphedema therapist and amazon affiliate who has tested over 1,000 different products.
