In-depth Comparison (2024): Casper Original Pillow vs. MyPillow Premium Series Pillow

Polyester Fiber (Down Alternative)

The Casper Original Pillow uses a pillow-in-pillow design with two layers, both made of polyester fiber, at slightly different firmness levels. This creates a thick but soft pillow that is great for back-sleepers who want a polyester fiber pillow. However, I don't recommend this pillow for side-sleepers due to the lack of adjustability: the thickness combined with the softness results in an unpredictable loft.

The most noticeable aspect of the Casper pillow is the loft: I measure it at 10 inches thick, the highest loft of any pillow tested. This is because the pillow is actually made up of a regular sized pillow covered by another layer of pillow. The outer layer can be unzipped to reveal the inner pillow sandwiched inside. The outer layer is extremely soft and thin. It resembles a comforter or a thick blanket. In fact, the pillow does remind me of a regular pillow wrapped in a comforter. The outer layer sinks completely in when used.

Unzipping the outer pillow reveals an inner pillow also made with polyester filling. Keep in mind that though the pillow can be unzipped, the filling cannot be adjusted. Unzipping doesn't give access to the filling. It only gives access to the inner pillow. While you can technically have three different lofts by sleeping on the inside pillow by itself, the outside layer by itself, and both layers combined, I wouldn't consider the pillow to be adjustable. I suspect most people will be sleeping on the pillow with all the layers together because either layer by itself is too thin for my preferences. Like the outer layer, the inner pillow sinks all the way down when I lay my head on it by itself. Based on my experience, neither the inner pillow nor the outer pillow will provide enough support for side-sleepers or back-sleepers individually. Theoretically, the inner pillow could be used for stomach-sleeping, but there are other options on the market that don't involve discarding half the pillow.

When used together, the pillows start at the full 10-inch-high loft. Laying my head down makes the pillow significantly thinner since both parts of the pillow are so soft. The inner pillow and the outer pillow compress all the way down when slept on individually, but the combined pillow does leave some loft simply because there is so much material. Unfortunately, as a side-sleeper, the loft feels slightly off for me, leaving my head angled uncomfortably. It's possible that some side-sleepers will find the loft level perfect, but I recommend that side-sleepers stick with a fully adjustable pillow like the Saybrook or Coop.

The Casper pillow and Sleepgram pillow share a lot of similarities. From the outside, they even look almost the same except for the different logos. There are three main differences, though. First, the Sleepgram pillow comes with two inner pillows. Despite this, both the Casper and Sleepgram pillows have the same loft, so the Sleepgram inner pillows are individually thinner compared to the Casper inner pillow. Second, the zipper on the Casper pillow feels to me like it's easier to operate compared to the zipper on the Sleepgram pillow, which contributes to my perception that the Casper pillow has higher quality construction. Finally, I find the Sleepgram pillow to be even softer than the Casper pillow. My head sinks down even more with the Sleepgram pillow. This is because the Sleepgram polyester filling glides more easily, so some of the material moves out of the way when I lay my head on it. The Casper pillow polyester fill is also soft, but it stays underneath my head, so even though it compresses, the material stays there to provide some loft.

Unlike some of the other pillows reviewed, the Casper pillow doesn't come with a separate cover. Inserting this pillow into a pillow case can be difficult due to the thickness. Though the pillow compresses easily when sleeping on it, getting it to compress from 365 degrees to shove inside a pillow case is relatively frustrating. It is far from impossible, but it does take more energy than it should. I find that when pillows are difficult to insert into pillow cases, I subconsciously avoid wash cycles.

The lack of adjustability makes the Casper pillow a non-starter for side-sleepers since the angle of the head is so important and everyone has a different shoulder and head size. For back-sleepers looking for a polyester fiber pillow, the Casper pillow is a great choice. Because of the thickness, even though the pillow sinks significantly, it still provides some support.

Shredded Foam

The MyPillow Premium Series Pillow dominates hours of late-night commercials, but the pillow disappoints in person. MyPillow uses large chunks of shredded foam with an elastic nature. As a result, the pillow is lumpy and bouncy. I would not recommend the MyPillow due to these comfort issues and the lack of adjustability.

The MyPillow doesn't come with a separate removable cover, and the pillow encasing cannot be unzipped, which means the pillow loft can't be adjusted. Instead, it comes in four different loft levels coded as colors, in increasing order of filling level: White, Yellow, Green, and Blue. I ordered the Green fill level after using the selection tool on the MyPillow site.

I measure the loft at about 7.5 inches, and the fill is pretty firm. The pillow barely compresses when I lay my head down passively. The loft is slightly too high for my comfort level when I sleep on my side, though I don't mind when I sleep on my back. The Green level pillow is too thick and firm for stomach-sleepers, but the White or Yellow fill level might work for that purpose. Because the pillow can't be adjusted, sleepers have to hope that one of the four fill levels happens to fit perfectly for them and hope that they choose the correct one on the first try.

My main issue with the pillow, though, is the nature of the shredded foam filling. The Saybrook and Coop pillows use softer foam and mix the foam with polyester fibers, so those pillows don't feel lumpy to me. On the other hand, MyPillow uses large chunks of firm foam without any polyester fiber, so the pillow is noticeably lumpy. The pieces of foam also have an elastic bounce. The MyPillow reminds me of a bag of packing peanuts in the firmness, the lumpiness, and the slight elasticity. When I shift my weight on the pillow, I can feel the elasticity of the foam. The jiggling of the elastic foam can be distracting as I try to fall asleep.

Based on the MyPillow website, it looks like there are two main differences between the MyPillow Classic Series and MyPillow Premium Series. First, the MyPillow Premium has a shorter width, coming in at 16.5 inches wide compared to the 18.5 inches of the MyPillow Classic. I would not expect this difference to affect my sleeping experience on the MyPillow. Second, the MyPillow Premium comes in four loft levels (White, Yellow, Green, and Blue), while the MyPillow Classic only comes in two (Medium and Firm). This is also not a difference that would affect my review since my main complaint is the lumpiness and bounciness.