In-depth Comparison (2024): Purple Harmony Pillow vs. Sleepgram Adjustable Pillow
I tested 14 different pillows over the course of six months. I slept on each pillow for at least five nights each. I rated each pillow based on how comfortable it was to sleep on over an extended period of time, whether or not the construction seemed high quality to me, and my take on suitability for different body types and sleep positions. Here is an in-depth comparison of the Purple Harmony Pillow and Sleepgram Adjustable Pillow.
At a Glance
| Brand Name | Purple | Sleepgram |
|---|---|---|
| Pillow Name | Harmony Pillow | Adjustable Pillow |
| Overall Rank | #6 out of 14 | #7 out of 14 |
| Fill Type | Solid Latex Foam | Polyester Fiber (Down Alternative) |
| Firmness / Softness | Soft | Too Soft |
| Starting Loft | 6.5 inches | 10 inches |
| Sleep Positions | Back | Stomach, Back |
| Body Types | Petite, Average, Big-and-tall | Petite, Average |
| Filling Comfort | ||
| Construction Quality | ||
| Score Out of 10 | 7.8 | 7.3 |
Detailed Reviews
Purple Harmony Pillow
Solid Latex Foam
- Squishy and fun to squeeze
- Soft interior
- Grid prevents sweat build-up
- Great for back-sleepers
- Not adjustable
- Bouncy when I lay my head on it
- Jiggles when I shift my weight, which I find distracting as I fall asleep
- Premium price
The Purple Harmony Pillow has a very unique feel since it is made of latex foam on the inside and a rubber-like grid built into its cover. The material is fun to squeeze because it is bouncy and squishy, but what makes a good stress ball doesn't necessarily make a good pillow. For back sleepers particularly worried about sweating, the Purple Harmony Pillow is worth trying, but I wouldn't recommend the pillow due to the bounciness.
When I lie down on the pillow, I am distinctly reminded of a water balloon. It is soft enough to squish down and compress, but the elasticity of the latex foam means that my head bounces back. I'll also feel a small trembling vibration make its way through the pillow, not unlike the feeling of water swashing back and forth. Every time I shift my weight on the pillow, the pillow will jiggle. Because I shift my weight occasionally as I fall asleep, the wobbling of the pillow will snap me back awake. I've had several instances where I was close to falling asleep only to be brought back to attention from the wobble. Nevertheless, I do eventually fall asleep, so the pillow doesn't completely prevent me from sleeping.
The signature Purple Grid can be found in the cover of the pillow. The substance of the grid feels like a gel-grip pen. It is fun to squeeze, but when I lay my head on it, I mostly just feel the latex foam underneath. The latex foam is what gives the bounce. The grid serves mainly to provide aeration since solid foam pillows tend to trap heat and sweat against the sleeper. In my experience, I find the grid to be pretty effective in preventing sweat build-up, but if heat and sweat is a concern, down and down alternative pillows tend to be better for breathability than solid foam pillows in general.
The Purple Harmony Pillow comes in three different loft levels, but the options are separated by one inch each, according to the Purple website at my time of purchase. Though I appreciate the different options, a one inch difference is the difference between a size 6 and a size 9 shoe (for both men and women), and I'd prefer a fully adjustable pillow that can accommodate sizes in between. Because the Purple Harmony Pillow is not adjustable, I wouldn't recommend it for side-sleepers.
Overall, I consider the Purple Harmony Pillow a novelty experience akin to a water bed. It's fun to try once, but I don't want to sleep on it regularly. I would not consider it worth purchasing again at the price point that I paid.
Sleepgram Adjustable Pillow
Polyester Fiber (Down Alternative)
- Extra soft
- A few configuration options exist
- Great for stomach-sleepers
- Not fully adjustable
- May be hard to fit into pillow case
- Premium price
- For side-sleepers, unlikely to get desired loft
- My head sinks down too much for my liking
The Sleepgram Adjustable Pillow is an extra soft polyester fiber pillow with a thick starting loft. Though nominally adjustable based on the pillow-in-pillow design that allows the sleeper to keep or remove two layers of inner pillows, I wouldn't consider the Sleepgram pillow fully adjustable because of the softness, which limits its appeal for those who want more support, and the inability to do micro-adjustments. The Sleepgram pillow can be a good option for stomach-sleepers, but I would not recommend it for side-sleepers and back-sleepers.
The Sleepgram pillow uses a pillow-in-pillow design similar to the Casper pillow. In fact, when I first unboxed the pillows, I thought they were the same pillow with different logos. However, on a closer look, I found three main differences. The first difference is the softness of the pillows. Both pillows have the same starting loft, but my head sinks in more when I sleep on the Sleepgram pillow compared to the Casper pillow. The Casper pillow is already so soft that my head sinks significantly, so I was surprised that the Sleepgram pillow had even less support. Even though the Sleepgram pillow starts at 10 inches of loft by my measurements, my head sinks so far into the pillow that I feel even less support than I get from pillows that start at half that loft. I would guess the difference between the Casper and Sleepgram softness comes from the friction in the polyester fibers. The Sleepgram polyester fibers glide very smoothly against each other, almost like silk strands. This means that the material appears to move to the side when I lay my head on the pillow. The Casper polyester fibers are also soft in terms of firmness, but they aren't as soft in terms of friction. Because of the softness of the Sleepgram pillow, I'm unable to get the support I need for side-sleeping, and this is one of the reasons I wouldn't consider the Sleepgram pillow fully adjustable.
The second difference is the number of inner pillows. The Sleepgram pillow has two inner pillows while the Casper pillow only has one. Nevertheless, the total starting loft is the same across the Sleepgram and Casper pillows as far as I can measure, so the Sleepgram inner pillows are individually thinner than the Casper inner pillow. I find this to be an advantage for the Sleepgram pillow because it does allow for more configuration options. Sleepgram labels one inner pillow with a blue tag and the other with a red tag. The instruction booklet that comes with the pillow says that the inner pillow with the blue tag is softer than the one with the red tag, so you can get different firmness levels by keeping different configurations of the two inner pillows. Because I can't get the support I need for side-sleeping on the Sleepgram pillow even with both inner pillows loaded inside, I tend to prefer stomach-sleeping when I use it. For stomach-sleeping, I'll remove the inner pillow with the blue tag. Though I appreciate the configuration options, I still prefer the ability to micro-adjust with the Saybrook and Coop pillows.
Finally, the zipper on the Casper pillow that I purchased feels significantly easier to operate for me compared to the zipper on the Sleepgram pillow that I purchased. This contributes to my overall perception that the Casper pillow has higher quality construction.
For stomach-sleepers who might want to try out different loft levels on the softer end of the spectrum, the Sleepgram pillow can be a good option. For side-sleepers, I'd recommend other options.
Picking the right pillow can be important. I did all the research here to make the process easier. I hope that this blog helps you as you make your decision.