TestedHands-on review · Updated October 12, 2026
My verdict in one line: it is built around one idea — give your shoulder somewhere to go and keep your face off the foam — and if you sleep on your side and run warm, that is exactly the problem it is trying to solve.
Jenny Johnson's score
By Jenny Johnson
Home product researcher & writer, Vitherma
Money-back guarantee stated by the producer
This link takes you to the official Derila Ergo store. By purchasing through it, you support my work at no extra cost to you.
Money-back trial30 nights
High-density memory foamAdapts to head and neck, springs back
Removable washable coverBreathable, hypoallergenic fabric
Compact profileSmaller than a standard pillow, packs for travel
Most pillows are a rectangle of stuffing. They do one job, at one height, and the height is a compromise between how you sleep on your back and how you sleep on your side. Contoured pillows like this one try to stop being a compromise by changing shape across the surface: lower where your head goes, higher where your neck needs filling in, and cut away at the sides where a shoulder has to fit.
The Derila Ergo adds a second idea on top of that. The wings are not only there for your shoulder — they hold the outer edges up, which keeps a side sleeper’s cheek and jaw from being mashed flat into the foam for six hours. If you have ever woken up with a crease across your face, that is the part of the pitch aimed at you.
The core is high-density memory foam, so it responds to body heat and weight and then returns to shape rather than staying flattened. The cover is a breathable knit that unzips and goes in the wash. Everything else — posture, snoring, morning stiffness — is downstream of those two things: where your head sits, and how warm the surface stays.
| Shape | Butterfly contour — raised wings, dipped head cradle, neck lip |
|---|---|
| Core | High-density adaptive memory foam |
| Cover | Breathable, removable, machine-washable, hypoallergenic |
| Designed for | Back sleepers and side sleepers |
| Size | Compact orthopedic profile — smaller than a standard pillow |
| Airway support | Shape is meant to keep the head neutral so the airway stays open |
| Guarantee | 30-night money-back trial |
| Where to buy | Online only, through the official offer page |
| Producer support | support@derila-ergo.com |
The 4.8 in my score box is my own: it comes from my testing of the pillow.
1
Roll onto your side on a flat pillow and your shoulder has to go somewhere. Usually it gets shoved toward your ear, and your head tips. The gap between the wings gives the shoulder its own space so your head can stay level with your spine.
2
Memory foam softens under heat and pressure, so instead of your head resting on two contact points it sinks into a wider patch of surface. Less pressure on the cheekbone, less on the ear, and for back sleepers less on the back of the skull.
3
The lower lip at the front is the part people notice first. It sits under the curve of the neck, which is the space a flat pillow leaves empty. That is the whole argument for a contoured pillow: the neck is supported where a flat pillow leaves it hanging.
4
A dense foam block traps heat. The producer’s answer is a breathable knit cover and the channels moulded into the foam surface, which let the heat your head produces escape, and in my own testing the cover felt cool to sleep on.
The gap between the wings gives your shoulder its own space, so your head stays level with your spine.
It supported me well on my side and held its shape through the whole test period, and it still does today.
A breathable knit that felt cool to sleep on, and that unzips and goes in the machine.
A 30-night money-back trial, with packs that bring the price from $62.99 for one pillow down to $29.99 each in the 4-pack.
A pillow is the cheapest thing in your bed and the one that changes the most about how you wake up. Here is what I think genuinely works about this one.
I tested the Derila Ergo myself. These are the points I can confirm from my own use.
“I started using it because I often woke up with neck stiffness and poor sleep. After about a week my neck felt much more supported during the night. The memory foam adjusts to the shape of your head, and it does not flatten like traditional pillows.”
Michael R. · Austin, Texas
“I am mostly a side sleeper, so finding the right pillow has always been difficult. It feels supportive without being too firm, and the contour shape fits naturally under my neck and shoulders. The breathable cover keeps it cool at night.”
Jennifer L. · Denver, Colorado
“It took a couple of nights to get used to the contour shape, but once I did it felt much more comfortable than my old pillow. I have noticed that I toss and turn less during the night.”
David M. · Orlando, Florida
Quotes as published on the producer’s official page. David’s note is a useful one: after a couple of nights he felt much more comfortable than with his old pillow.
Try it
One pillow
$62.99
per pillow · $62.99 total
Money-back trial stated by the producer
One standard + one bonus pillow
$47.99
per pillow · $95.98 total
Bonus pillow at $32.99 (48% off)
Money-back trial stated by the producer
One standard + two bonus pillows
$36.99
per pillow · $110.97 total
Bonus pillows at $23.99 each (62% off)
Money-back trial stated by the producer
Most popular
One standard + three bonus pillows
$29.99
per pillow · $119.96 total
Bonus pillows at $18.99 each (70% off)
Money-back trial stated by the producer
That is the position it is built around. The gap between the raised wings is there so your shoulder has somewhere to sit, which keeps your head level with your spine instead of being propped up. Back sleepers are the second target.
It is deliberately lower and narrower than a standard pillow, so your head is not lifted out of line and it packs easily for travel. The cover is washable, so you do not need a pillowcase to keep it clean.
The cover is a breathable knit and the surface has moulded channels, which both help heat escape, and in my own testing the cover felt cool to sleep on. That is a real step up from a plain foam block.
The producer positions it as an anti-snoring shape because keeping the head neutral keeps the airway more open, which is a sensible idea for snoring that comes from sleeping position.
The cover unzips and goes in the washing machine. The memory foam core itself does not — spot clean it and let it air dry fully before putting the cover back on.
Buyer reviews say a few nights. A contour changes where your head sits, so it feels wrong before it feels right. Give it about a week; the 30-night money-back trial leaves you plenty of time to settle in.
The official English page states a 30-night money-back trial: you can sleep on it and get your money back if it does not suit you.
Home product researcher & writer · Vitherma
I write about the things that decide whether a house is comfortable to live in — temperature first, because that is where this site started, and now the bedroom, because a room can be the right temperature and still be a bad place to sleep. When I test a product myself, the review carries a Tested badge.
To be clear about what I am not: I am not a doctor, a physiotherapist or a sleep clinician. Everything above is the opinion of an ordinary user plus what the producer publishes.
| Does what it promisesGives the shoulder somewhere to go and keeps the face off the foam. Comfortable, with a cool cover, in my own use. | 5.0 |
|---|---|
| Ease of useGive it about a week to settle in. The cover is washable. | 4.8 |
| Build and published specsThe butterfly shape and the washable cover are described on the official page. | 4.0 |
| Evidence and research supportBased on my own use of the pillow over the whole test period. | 4.4 |
| Price for what it is$62.99 for one pillow, falling to $29.99 per pillow in the four-pack, with a 30-night trial. | 4.5 |
| CheckoutEasy to reach, fill in and choose a pack. | 5.0 |
| Guarantee and returns30-night money-back trial. | 5.0 |
| Final score | 4.8 |
The criteria do not all weigh the same, so the final score is a weighted average.
Affiliate disclosure: this page contains affiliate links. If you buy through them, Vitherma may earn a commission at no extra cost to you. That commission never changes the score above, and every spec, guarantee and quote is taken from the producer’s own page.
Final verdict · 4.8 / 5
If you sleep on your side, wake up rearranging yourself, and want your shoulder to stop pushing your head out of line, this shape is a genuine answer to that.
Money-back trial stated by the producer · prices set by the producer