Everlasting Comfort Seat Cushion Review: 2 Years Later

Sitting at a desk for eight hours or driving a long stretch on a worn car seat can leave your tailbone and lower back aching. The Everlasting Comfort Seat Cushion is one of Amazon’s most popular fixes, with a 4.4-star average across more than 105,000 ratings.

This is a 100% memory foam seat cushion built around a U-shaped coccyx cutout that lifts your tailbone off hard surfaces. It pairs that with a non-slip base and a removable, machine-washable mesh cover, and it works on office chairs, car seats, and as a wheelchair cushion, among other seats.

I have been sitting on this cushion for a little over two years now, mostly at my desk and in my car. I bought it for lower back pain, so this review covers what held up, what started to bug me, and what I wish I had known on day one.

The short version: it delivers firm, durable tailbone and lower back relief that still holds its shape after two years, but the firm memory foam and the added height are not for everyone.

What I Liked After Two Years

Memory Foam That Held Its Shape After Two Years

The listing promises 100% memory foam that keeps its shape over time, and after two years of near-daily use that claim held up. When I press the foam it rebounds almost instantly, and the cushion is close to the thickness it had on day one.

There is a little softening, which is natural for any foam cushion, but it stays minor. If I handed it to someone as a new seat cushion, they would believe me.

The U-Shaped Coccyx Cutout Relieves Tailbone Pressure

The U-shaped cutout at the back is the main reason to buy this one. It suspends your coccyx above the seat so pressure shifts to your hips, knees, and legs instead of your tailbone, and after two years it still provides genuine pain relief for my lower back.

How much you feel it depends on your chair. In a well-padded ergonomic office chair I did not always need it, but on a hard or worn seat the difference is obvious.

Non-Slip Base Keeps It Planted on a Car Seat

The non-slip base is where this cushion earns its keep in my car. I drive a Subaru Forester with seats I have never loved, and the cushion simply stays put.

I almost never reach down to readjust it, even after getting in and out all day. On an office chair the grip is just as steady.

A Washable Mesh Cover That Rarely Needs Cleaning

The soft, breathable mesh cover unzips from the foam and goes straight into the washing machine. Over two years I have washed it only twice, and it was not dirty either time.

One rule matters here: only the cover is washable. Keep the memory foam core out of the washer and the dryer.

Affordable Foam With CertiPUR-US Certification and a Lifetime Policy

For a memory foam cushion the price sits on the affordable side at $47.99. The foam is CertiPUR-US certified and the mesh cover carries an OEKO-TEX Standard 100 textile certification.

Everlasting Comfort also backs its non-electronic products with a lifetime replacement policy. If the foam ever flattens or splits from normal use, you can contact the brand through everlastingcomfort.net for a replacement, so keep your order information handy.

What Needs Improvement

The Firm Memory Foam Divides People Sharply

Firmness is the one thing owners are split on. This is a firm cushion, not a soft one, and while I like firm without hard, plenty of buyers find it too rigid.

The foam also stiffens in the cold. Leave it in the car overnight in winter and it feels harder for the first few minutes until your body heat softens it.

Plain Memory Foam Can Trap Heat on Warm Days

This is the plain memory foam version, not the separate gel-infused model. Memory foam traps body heat, and in a warm room or a hot car you will notice it.

The breathable mesh cover helps airflow, but it does not match a gel cushion. In Automoblog’s hands-on car testing the cushion scored 3.5 out of 5 for airflow. Everlasting Comfort uses the same plain memory foam in its Everlasting Comfort Lumbar Support Pillow, which builds up heat for the same reason during long office sessions. If you want that dense, firm memory foam feel for propped reading instead of sitting, the HOMEPAC Ergonomic Memory Foam Wedge Pillow puts it into a 27 degree wedge.

The Added Height Can Crowd a Low Car Roof

At 3.15 inches thick, this cushion raises how high you sit. I am on the shorter side, so I like the lift in my car, but a taller driver may end up close to the roof.

At a desk, plan to lower your office chair a little after you add it. If the extra seat height is a dealbreaker, the OPTP McKenzie Lumbar Roll supports your lower back from behind without raising how high you sit.

Narrow Seats and Big Bolsters Limit the Fit

The cushion measures 17.3 by 14 inches, which fits most chairs but can feel tight for larger frames. If your car seat is narrow or has tall side bolsters, it may not sit flat.

Reviewers also note it can run small, so measure your seat before ordering. For heavier users who sit all day, expect more compression over the years than a lighter person would see.

How It Compares

The Everlasting Comfort sits in the budget tier of orthopedic seat cushions, and it competes well for the money.

ComfiLife Gel Enhanced Seat Cushion ($40-50) is the closest rival, with the same U-shaped cutout plus a gel layer and a carry handle. It runs a touch squishier than this firmer foam, so pick it if you want a softer feel with similar tailbone support.

Purple Double Seat Cushion ($69+) swaps memory foam for a GelFlex grid that breathes far better. If heat is your main worry, Purple’s design stays cooler, though it costs more and takes longer to get used to.

Xtreme Comforts Large Seat Cushion ($30-40) is Wirecutter’s budget pick, a larger and plusher foam seat with a vented cover. It has no coccyx cutout, so it is better for general back support than targeted tailbone or sciatica relief.

Tempur-Pedic Seat Cushion ($70+) is firmer and contoured, with a five-year warranty and a reputation for stable posture support. It lacks a non-slip bottom, which matters on long drives, and it adds less height.

If you want durable memory foam with a true coccyx cutout and a base that stays planted in a car, the Everlasting Comfort holds its ground. Everlasting Comfort also sells a seat-and-lumbar bundle that pairs this cushion with a lumbar support pillow, a back cushion that adds lumbar support to ease strain on your lower back and neck.

Two Years In: The Durability Check

The big question with any foam cushion is whether it flattens, and this is where two years of use matters. Mine still rebounds, holds its height, and gives the same lower back relief I bought it for.

Owner reports back this up with a wide range. Some people on Reddit report no flattening after two years or even close to five, while others preventively replace theirs every couple of years, and heavier daily sitters tend to see the shortest life.

The lifetime replacement policy is a real safety net, but read the terms. Coverage runs through Everlasting Comfort directly and can require registration, so it is not an automatic no-questions swap on an Amazon order.

Final Verdict

The Everlasting Comfort Seat Cushion earns a 4.3 out of 5. It delivers firm, durable tailbone and lower back pressure relief, a non-slip base that stays planted, and a washable cover, all at a fair price.

The firm feel, the heat of plain memory foam, and the extra height hold it back from a perfect score. One note: this is a comfort and support product, not an FDA-cleared medical device, so treat it as pain management support for your spine rather than a cure for sciatica or chronic back pain.

After two years of daily use at my desk and in my car, would I buy it again? Yes. It does the one thing I needed, relieving pressure on my lower back and tailbone, and it has kept doing it.