Key takeaways
- Memory foam core: a single block of slow-recovery foam that molds to your seat bones.
- U-shaped coccyx cutout: an opening at the back so the tailbone is not loaded directly.
- Contoured top: raised around the edges and dipped under the thighs to keep you centered.
- Removable zippered cover: machine washable, which matters for any cushion used daily.
- Non-slip underside and carry handle: helps the cushion stay put on a chair and travel to a car or stadium seat.
The Everlasting Comfort seat cushion is a solid, affordable memory foam cushion for people who sit on a hard or flattened office chair seat and want tailbone relief; it is less suited to people who run hot, weigh well over about 250 lb, or need a thin cushion that keeps their desk height unchanged.
This review looks at what the cushion is built from, who it fits, its real drawbacks, and when a cooling, heated, gel or thinner cushion makes more sense. It is based on the product’s published design and how memory foam cushions of this type generally behave, not on personal use.

Everlasting Comfort Doctor Recommended Memory Foam Seat Cushion for Office Chairs & Car - Ergonomic Office Desk Accessories - Cushions for Tailbone Pain Relief, Sciatica (Black, Large)
Included for 'Everlasting Comfort Seat Cushion Review: Who It Suits and Who Should Skip It' because the listing specifies Ergonomic Office Desk Accessories and Cushions for Tailbone Pain Relief, details this guide uses to compare options.
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Everlasting Comfort Car Seat Cushion for Driving - Orthopedic Car Cushion for Office, Travel, Gaming Chair Memory Foam Driver Booster for Short People, Non-Slip, Washable Cover, Back & Sciatica Relief
Included for 'Everlasting Comfort Seat Cushion Review: Who It Suits and Who Should Skip It' because the listing specifies Orthopedic Car Cushion for Office and Travel, details this guide uses to compare options.
View on AmazonWhat You Get
Everlasting Comfort is a brand focused on memory foam comfort products such as seat cushions, lumbar pillows and footrests. Its flagship seat cushion has these core design traits:
- Memory foam core: a single block of slow-recovery foam that molds to your seat bones.
- U-shaped coccyx cutout: an opening at the back so the tailbone is not loaded directly.
- Contoured top: raised around the edges and dipped under the thighs to keep you centered.
- Removable zippered cover: machine washable, which matters for any cushion used daily.
- Non-slip underside and carry handle: helps the cushion stay put on a chair and travel to a car or stadium seat.
Pricing typically sits in the $30–$50 range, which puts it in the middle of the memory foam cushion market.
Strengths
Tailbone and sit-bone pressure relief
The coccyx cutout is the main reason people buy this style. On a firm chair or a car seat, the opening lets the tailbone float instead of pressing against the surface. That is useful for people with tailbone soreness, after long drives, or in late pregnancy when sitting gets uncomfortable.
Adds life to a worn chair
If your office chair’s original foam has flattened, a memory foam cushion restores padding for a fraction of the cost of a new chair. It can also add a little height for shorter users at a fixed-height table.
Easy to clean and move
The washable cover and handle make it practical as a portable cushion for the office, the car or a wooden kitchen chair.
Weaknesses
- Heat: memory foam traps body heat. In warm rooms or in summer, many people find any solid foam cushion warm after an hour or two.
- Temperature-sensitive firmness: memory foam stiffens in cold rooms and cars and softens in heat, so feel changes by season.
- Bottoming out for heavier users: one-layer foam cushions can compress fully for heavier sitters, at which point the relief drops off.
- Raises your seat: a thick contoured cushion lifts you by a couple of inches. You may need to lower the chair or raise the desk.
- Fit on contoured chairs: on bucket-shaped gaming seats or narrow mesh seats, a flat-bottom cushion can rock or overhang the edges.
Who It Fits: A Quick Decision Table
| Your situation | Good fit? | Better alternative if not |
|---|---|---|
| Hard wooden or plastic chair | Yes | – |
| Flattened office chair foam | Yes | – |
| Tailbone pain or long drives | Yes | – |
| Hot room, sweat-prone | Partly | Gel grid or ventilated mesh cushion |
| Over about 250 lb | Partly | Thicker high-density or dual-layer cushion |
| Desk already at the right height | Partly | Thin 1–1.5 in cushion |
| Cold office in winter | Partly | Heated seat cushion |
How It Compares to Other Cushion Types
| Cushion type | Typical thickness | Heat | Typical price | Main trade-off |
|---|---|---|---|---|
| Memory foam with coccyx cutout (this type) | 2.5–3.5 in | Warm | $25–$60 | Heat, raises seat height |
| Gel-infused memory foam | 2–3.5 in | Slightly cooler at first | $30–$70 | Cooling effect fades as gel warms |
| Honeycomb gel or polymer grid | 1.25–2 in | Cool, open cells | $40–$130 | Firm feel, less sink-in |
| Ventilated cooling cushion (fans or mesh) | 1–2 in | Coolest | $40–$120 | Fans need power, mesh is thin |
| Heated seat cushion | 0.5–1.5 in | Warm by design | $30–$100 | Cord or battery, little support |
| Thin foam pad | 1–1.5 in | Neutral | $15–$40 | Little pressure relief |
Cooling, Heated, Thin and Cute Alternatives
If you want cooling and breathability
Look for a polymer grid cushion such as those from Purple, which use open columns that let air move, or a cushion with a 3D mesh cover. Gel-infused foam helps only for the first stretch of sitting.
If you want heat
Heated seat cushions are mostly thin pads with an auto shut-off timer. They pair well with a supportive chair rather than replacing a support cushion.
If you want an office chair with a thick seat instead
If you are adding a cushion to every chair you own, the chair itself may be the problem. Office chairs with molded high-density foam seats of 3–4 inches often outlast any add-on cushion.
If you want something cute
Decorative cushions with printed or plush covers exist in many styles, but most use thin foam or fiberfill. Pick one only for short sitting; for full workdays, a patterned cover over memory foam is the better compromise.
Getting the Most From It
- Place the cutout at the back of the chair, against the backrest.
- Lower the chair by about the cushion’s thickness so your feet stay flat.
- Give memory foam a day or two to fully expand after unboxing.
- Wash the cover regularly and let the foam air out; do not machine wash the foam itself.
- Expect to replace a daily-use foam cushion every 1–3 years as it loses rebound.
Verdict
The Everlasting Comfort seat cushion does what a well-designed memory foam coccyx cushion should do: it softens hard seats, takes pressure off the tailbone and is easy to clean. Choose it for firm chairs, car seats and moderate climates. Look elsewhere if heat, heavier body weight or desk height is your main concern.