Everlasting Comfort Seat Cushion Review: What Happens After 6 Months in a Truck Seat

My lower back had been talking to me for about three years before I finally bought the Everlasting Comfort memory foam seat cushion. I run a Kenworth T680 on the Louisville-to-Phoenix corridor, five days a week, and I am in that seat for somewhere between nine and eleven hours most days. The factory seat foam was flat by year two. I had been folding a moving blanket under my tailbone like an idiot. When I finally ordered the Everlasting Comfort, I told myself I would give it a real test: six full months before I wrote anything down.

That was six months ago. I am writing it down now. This is the long-term review. If you want to know whether the foam goes pancake on you after a few weeks, or what the non-slip bottom actually does on a truck seat, or how the cover holds up when you throw it in a truck stop laundry, this is the review you need.

How I Have Used It

I drive Louisville to Amarillo or all the way to Phoenix depending on the load. That is anywhere from 650 to 1,100 miles one way, usually split over two days with a sleeper stop somewhere around Oklahoma City or Albuquerque. My typical day behind the wheel is nine hours, sometimes pushing eleven if I am chasing a delivery window. I sit on this cushion for that full stretch every single day, five to six days a week.

Before the Everlasting Comfort, I went through two generic gel cushions from truck stop shelves. The first one lasted about two weeks before it turned into a bag of water. The second had a coccyx cutout but the foam was so soft it bottomed out by month one. I was not expecting much from another cushion. I ordered the Everlasting Comfort in late November of last year, dropped it onto the seat the first morning, and have not taken it off since.

I washed the cover roughly every three weeks, sometimes two if I had a particularly sweaty stretch through Texas in December and January when the cab heat runs high. I tracked how the foam felt at the end of each month by pressing my palm into the center and the edge and making a note on my phone. That is the data behind this review.

The Non-Slip Base on a Fabric Truck Seat

This was my first real surprise. The bottom of the Everlasting Comfort cushion has a rubberized non-slip coating, and I was skeptical it would hold on the textured fabric of a T680 driver seat. Truck seats are not smooth. They have contoured side bolsters and stitching lines, and cushions like to slide toward the door when you get in and out all day. This one does not slide. In six months I have repositioned it maybe four times, and two of those were after I dropped it getting out of the cab.

The trick seems to be that the cushion is wide enough to sit in the seat's own contour rather than riding on top of it. It is 17.5 inches wide by 13.5 inches deep, which fits inside the bolsters on most standard truck seats rather than bridging over them. That keeps it stable. If you have a seat with aggressive bolsters, your mileage may vary, but on a standard semi-truck flat-bottom seat it grips well.

In six months I repositioned it maybe four times. That is the best result I have seen from any truck seat cushion, gel or foam.

Tailbone Relief Over Time: What Actually Changed

The coccyx cutout is the feature that made me try this one in the first place. The U-shaped channel at the back of the cushion is designed to keep your tailbone from making contact with the foam surface, so you are sitting on your sit bones instead of your coccyx. The difference it makes on an 11-hour day is not subtle.

By week two I noticed I was not shifting my weight every 45 minutes the way I used to. I used to move around constantly, essentially trying to redistribute pressure off my tailbone. On this cushion, month one to month three, that shifting dropped to maybe twice per hour, and only because I wanted to stretch, not because the pain was building. My lower back still gets stiff after nine hours no matter what I sit on. That is just physics and miles. But the sharp tailbone pressure that used to hit around hour six was gone by month one and has not come back.

Month four and five, I started to notice the edge of the cushion at the back left corner feels a little less firm than the center. This is where I rest when I lean to grab things from the cubby behind my seat. The center remains consistent, but that back corner has softened. It has not bottomed out, and it is not affecting support meaningfully, but it is there. I will call it out because it is honest.

Memory Foam Shape Retention After Daily Use

Memory foam gets a bad reputation for compressing out over time, and some of it is deserved. The cheap stuff will flatten inside of 60 days under real weight and real hours. The Everlasting Comfort uses what they call gel-infused memory foam, and based on six months of daily use, it holds up better than anything I have tried in this price range.

Here is my informal test. On the day I received it, I pressed my palm into the center with full force for five seconds and timed how long it took to fully rebound. About six seconds. At the three-month mark, same test: seven seconds. At six months: still seven seconds. The foam is slower to recover than it was new, which is normal, but it is not pancaking. The center of the cushion still lifts me off the hard seat pan with the same perceived height. That is the test that matters.

For reference, one of the gel cushions I tried before this one was completely flat at 45 days. A foam wedge from a different brand compressed down about 40 percent by month three. The Everlasting Comfort at month six feels closer to month two than to dead foam. That is a real difference.

The Cover: Washing It in Truck Stop Laundry

The cushion comes with a removable velour cover. It zips off from the bottom and goes in the wash. The tag says cold water, gentle cycle, no dryer. I have washed it ten times over six months, mostly at Pilot Flying J laundry facilities, where the machines are coin-operated and not particularly gentle despite the gentle setting. The cover has held up. The stitching has not frayed. The velour has thinned slightly, which is visible in certain light, but it has not pilled or torn.

What I will say honestly: the cover does pick up smell faster than I expected, probably from being in a truck cab. After a long stretch through humid Mississippi and Louisiana in February, I could smell it after a week. Washing cleared it, but if you are in a hot, humid climate, plan on washing the cover closer to every ten days rather than three weeks. That is a cab hygiene issue as much as a product issue, but I want you to know.

One thing I wish: I wish a spare cover were sold separately. When the cover is in the wash, the foam is exposed and you either skip a few hours in the cab or lay a spare shirt over it. Having a backup cover would fix this. Some buyers seem to find third-party replacements on Amazon. I have not tried one yet.

How It Compares to What I Used Before

I have bought four seat cushions in the past three years. Two generic gel cushions from truck stop shelves, a foam wedge from a brand I will not name that was available at a Walmart off I-40, and now the Everlasting Comfort. The gel cushions lasted weeks. The wedge lasted about three months before the foam compressed so much it was essentially a thin mat. None of them had a coccyx cutout. All of them shifted around the seat constantly.

The Everlasting Comfort is the first one I have used past the six-month mark with no plan to replace it. That alone tells you something. For comparison purposes, I have also looked at the ComfiLife cushion, which is a close competitor. I have not used it personally for months, but I have done a full side-by-side comparison in a separate article linked below. Based on specs and short-term feel, the Everlasting Comfort wins on the coccyx cutout depth and the non-slip base. ComfiLife has a firmer foam if that is your preference.

Who This Is For

This cushion is built for anyone who sits for a living. Long-haul truckers, Uber and Lyft drivers running 10-hour shifts, rideshare contractors, delivery drivers, or anyone in a sedentary office chair who actually wants to know if it holds up past two months. If you are logging five or more hours a day in a seat and your tailbone or lower back is consistently sore by early afternoon, this is the upgrade to make. The foam holds, the coccyx relief is real, and it stays where you put it. That combination is harder to find than it should be.

Who Should Skip It

If you need extremely firm support because you have a specific back injury that requires an orthopedic grade cushion, this may not be dense enough. It is medium-firm memory foam, not a rigid orthopedic wedge. Also, if you frequently drive in a hot, high-humidity climate and know you will not keep up with washing the cover regularly, expect odor issues. And if you have a truck seat with very aggressive side bolsters that narrow the sitting surface, the cushion's width may not fit cleanly inside the contour. Measure your seat pan before ordering.