Evina™ Tailbone and Back Support Seat Cushion
Evina™ Tailbone and Back Support Seat Cushion
After losing the weight, there's nothing left between your tailbone and the chair. A regular cushion pads the seat, but the second you slouch or lean back, your weight rolls right onto your tailbone again. This one pairs a tailbone cutout with an attached backrest that keeps you sitting upright, so staying off the sore spot stops depending on willpower.
🩶 Open space under your tailbone
🔘 Backrest keeps you sitting upright
⚪ Stays put on desk and car seats
🌫️ Removable cover goes in the wash
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Evina™ Tailbone and Back Support Seat Cushion
Shipping & Delivery
Shipping & Delivery
We offer fast worldwide shipping. Most orders arrive within 6 to 12 business days. Please allow up to 3 business days for processing before your order ships. You will receive a tracking number by email so you can follow your order every step of the way.
How does it work?
How does it work?
The seat base has a cutout at the back, right where your tailbone would normally press into the chair. Instead of landing on a surface, your tailbone sits over open space.
The backrest is attached to the seat, so your lower back has something to rest against the whole time. It's designed to keep you upright and on your sit bones, which is where your weight belongs when the padding is gone.
What makes it different from my old cushion?
What makes it different from my old cushion?
Most cushions only cover the seat. They help until you start slouching or leaning back, and then your weight shifts straight onto your tailbone again.
This one supports your seat and your lower back together as one piece. You're not relying on catching yourself every ten minutes to sit up straight.
What is it made of and how big is it?
What is it made of and how big is it?
A high density foam core designed to hold its shape through long days of sitting, with a breathable cover that zips off and goes in the washing machine. The non slip base keeps it from sliding on office chairs and car seats.
It measures 17.3 × 15.7 × 14.5 inches and comes in Gray, Black, Cream and Pink.
Why Your Last Cushion Stopped Working by Lunch
Here's what nobody mentions after the weight comes off. When you sit up straight, your weight is on your sit bones. The moment you slouch or lean back, it rolls onto your tailbone, and there's no padding left to catch it.
That's why the donut pillow helps for an hour and then doesn't. It pads the seat but leaves your posture up to you. By noon you're slumped, shifting every few minutes, and bracing yourself every time you stand.
This cushion was built for exactly that gap. The tailbone cutout leaves open space under the sore spot, and the attached backrest is designed to keep your lower back upright so you stay on your sit bones without thinking about it. You sit down and get to work.
For the Drives Where You Can't Just Stand Up
At your desk you can get up and walk it off. Behind the wheel, you're stuck. Forty minutes into the commute you're leaning to one side and counting exits until you can stop.
Flat cushions slide forward on a car seat, and the cutout ends up nowhere near your tailbone. Then you spend every red light pulling it back into place.
The non slip base is designed to keep it from sliding, and the backrest sits right against your car seat so you stay upright the whole trip. Long drives start feeling like drives again, not something you have to survive.
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30 Day Money-Back Guarantee
We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
Customer Reviews
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★★★★★
Finally Made It Through a Full Workday
"I work from home and after losing about 70 pounds my old chair cushion just stopped doing anything. The backrest keeps me sitting up so I'm not rolling back onto my tailbone by noon. I actually forgot it was there yesterday."
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★★★★★
Better Than the Donut Pillow I Carried Around
"I tried two donut pillows and a really expensive office chair and still dreaded sitting down. This one keeps me upright and I'm not squirming around every few minutes anymore."
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★★★★★
My Commute Is Bearable Again
"I drive an hour each way and since the weight came off I'd be squirming before I even hit the highway. It doesn't slide around on my car seat and the back support keeps me sitting up the whole drive. Wish I'd bought it months ago."
Frequently Asked Questions
Will it flatten over time?
Will it flatten over time?
The foam core is designed to hold its shape under daily use and spring back after you stand up.
Is it too soft or too firm?
Is it too soft or too firm?
It's soft enough to sit on for hours and firm enough that you don't sink straight through it.
Will it slide around on my chair?
Will it slide around on my chair?
The non slip base is designed to keep it in place on office chairs, desk chairs and car seats without constant adjusting.
Can I use it in the car?
Can I use it in the car?
Yes. It works on most car and truck seats, which makes it a good fit for commutes and long drives.
Will it fit my office chair?
Will it fit my office chair?
It measures 17.3 × 15.7 × 14.5 inches, which suits most standard office and desk chairs. Check your seat width before ordering if your chair is on the smaller side.
Can I wash it?
Can I wash it?
Yes. The cover unzips and goes straight in the washing machine.
Who is it for?
Who is it for?
Anyone who sits for long stretches and feels their tailbone more than they used to, especially people who've lost a lot of weight and noticed that chairs suddenly feel harder.