In-depth Comparison (2024): Saybrook Adjustable Pillow vs. Pillow Cube Pro Pillow

Shredded Memory Foam and Polyfiber Mix

The Saybrook Adjustable Pillow is by far the most comfortable pillow I've tried, and it's the only pillow that stops me from tossing and turning at night. I used to think that it was normal to wake up periodically to shift my weight, but because the Saybrook pillow can adjust to the exact loft (height level) I need to cradle my head in place, I no longer wake up in the middle of the night to move my pillow around. I'm amazed by how much deeper my sleep is with the Saybrook pillow, and I wake up more well-rested in the morning. It's also the perfect combination of softness and firmness. I'd describe the consistency as firm enough to support my head but also soft enough so that it doesn't hurt my ears or jaw. I'm obsessed with the Saybrook pillow, and I use it as my personal pillow now.

The Saybrook pillow is one of three adjustable pillows I tested that use a combination of shredded memory foam and polyester fiber in the filling. The shredded memory foam can be removed or added back in to adjust the loft, and the polyester fibers smooth out the fill material so that lumpiness isn't an issue. The pillows can be unzipped for easy access to the filling inside. For side-sleepers, the adjustable loft is a huge advantage. The key to finding a good pillow is finding the right loft and the right softness, and an adjustable loft takes care of one half the equation perfectly. I like these adjustable pillows in general, but I like the Saybrook pillow the most because of the high-quality fill material.

The Saybrook pillow distinguishes itself in the filling. Saybrook uses a blend called "Lion Down Alternative," and I find the pun pretty amusing. Compared to the other shredded memory foam and polyester fiber blends, Lion Down Alternative has a higher proportion of memory foam, and the overall feel of the pillow is more like a memory foam pillow. When I sleep on the other adjustable pillows in this review, I feel more like I'm sleeping on a polyester pillow. In addition, the Saybrook memory foam feels to me like it's the highest quality. Pieces of memory foam in the Wondersleep pillow feel hard and uncomfortable to me while the Coop memory foam feels more like regular foam in my opinion. The Coop foam reminds me of the foam used in Walkman over-the-ear headphones from the 80's (not necessarily uncomfortable, but it has a different, more mundane feel), while the Saybrook memory foam has the signature squish I've come to expect from memory foam. The high proportion of memory foam pieces combined with the slight amount of polyester fiber results in a medium softness / firmness. It cradles my head with ample support when I sleep on my side, and I don't find myself tossing and turning at night when I use it. At the same time, the pillow still feels soft enough to be comfortable when I squish it, and it isn't so firm that I feel pressure against my ears or jaw. I can still turn my head without feeling pushback while lying down if I want to, which isn't true for some of the firmer pillows.

In the past, I had tried low-cost shredded memory foam pillows off of Amazon that were in the $20 - $50 price range, and they almost made me give up on shredded memory foam pillows. The pieces of memory foam were hard and stiff, causing the pillows to feel lumpy. Many of them didn't have the polyester fibers mixed in, unlike the Saybrook, Coop, and Wondersleep pillows, and the lack of polyester fibers exacerbated the lumpiness. Some of the pieces of foam in these low-cost pillows were sticky or had a rind on them that made me suspect the foam was a byproduct of mattress production. The Saybrook pillow (and the Coop pillow) use all new foam, and these pillows don't feel lumpy. If you've tried $20 - $50 shredded memory foam pillows in the past and have been disappointed, I would give the Saybrook Adjustable Pillow a try. You'll probably be surprised how different the Saybrook pillow feels. If you haven't tried a shredded memory foam pillow before, I recommend avoiding the $20 - $50 pillows. These types of pillows are noticeably better in the luxury pillow price range.

The Saybrook pillow comes in a zippered tube that acts as a measuring cup for removing filling. The tube instructs sleepers to take out enough to fill the tube in order to have a thinner pillow. I appreciate the rough guidance on how much filling to remove for people who want a lower loft, though obviously everyone should make their own micro-adjustments to get the right loft for them. I personally took out enough to fill the entire tube for side-sleeping. I also appreciate that there is a place for me to store the extra filling in case I need it later. The downside for the Saybrook is that it doesn't come with an additional bag of filling, while Coop provides an extra bag. However, this isn't a deal-breaker because I'd guess most people won't use all the filling. In addition, I measure 3.6 lbs of filling inside the standard-sized Saybrook pillow and 3.2 lbs of filling inside the standard-sized Coop pillow. The extra bag of Coop filling brings its overall weight to 3.7 lbs, so the total amount of filling for both pillows turns out to be very similar based on my measurements.

For back-sleeping, I use the same amount of fill as side-sleeping with the Saybrook pillow. When I sleep on my back, I don't need the thickness to match my shoulder size, and instead, I care about giving my neck support while making sure my head doesn't get pushed too forward. The tolerance range for the loft is higher when I sleep on my back. The loft I use for side-sleeping works for back-sleeping on the Saybrook pillow as well.

The Saybrook pillow uses a removable cover made of bamboo fabric. The fabric has a slight sheen, and the texture sits halfway between silk and knit wool. Out of all the pillow covers, I enjoy the Saybrook and Tempur-Pedic covers the most.

Overall, the Saybrook pillow has really impressed me, and I've been obsessively recommending it to all my friends and anyone who will listen. I like the adjustability and the quality of the filling. I like the way the bamboo cover feels against my cheeks. Sleeping on this pillow, I feel refreshed in the morning without any jaw pain or neck pain. It's been a long journey, but I've finally found the perfect pillow.

Update (8 months later): I've been sleeping on the Saybrook Adjustable Pillow for a while now, and it still sleeps like new! I'm very happy with the quality and durability of this pillow. I fluff this pillow in the dryer on a no-heat, gentle setting once every 2 months like the instructions say, and the pillow stays at the loft I want. I attribute this to the high-quality memory foam material.

Solid Memory Foam

I do not like sleeping on the Pillow Cube Pro Pillow, and I would not consider purchasing it or any other cube-shaped pillow again. The Pillow Cube advertises its unique shape (a cube or a rectangular box in the case of the Pro Pillow), but in my opinion, there is a reason why other pillows aren't shaped like a box, and it's not because no one else realized it was possible. Instead, it's because our necks and shoulders don't connect in sharp angles, so regular memory foam pillows have a curve instead of an edge. When I use the Pillow Cube, the sharp angle digs into my neck.

The Pillow Cube Pro Pillow is a solid memory foam pillow in the shape of a rectangular box. The pillow is available in a 4-inch, 5-inch, and 6-inch size. The website, as of my time of purchase, advertises that the different sizes allow the pillow to perfectly fit the pillow gap, but the website also recommends the 5-inch option for everyone between 5'4" and 6'3". Since that is a wide range of heights and body types, I was already skeptical that the pillow would fit perfectly. As expected, now that I've tried the pillow, I can confirm that the 5-inch pillow doesn't fit my shoulder gap perfectly. Though the 5-inch starting loft is a relatively low starting loft, because the foam is incredibly firm and doesn't compress when I lay my head on it, the effective loft of the pillow feels relatively thick. My neck ends up angled uncomfortably when side-sleeping. In general, the 1-inch gap between sizes is the same as the size difference between a size 6 shoe and a size 9 shoe (for both men and women), so I would expect many people won't be able to find a perfect fit. Instead, for side-sleepers, I recommend looking at an adjustable pillow like the Saybrook or Coop pillows, which can be micro-adjusted to the perfect fit.

I consider the shape of the pillow a downside as well. The boxy shape makes the pillow worse for back-sleeping and stomach-sleeping because I can feel the corners dig into my neck. Though the pillow is designed for side-sleepers, the way the pillow affects back-sleepers and stomach-sleepers is worth noting because many people switch among the positions even if they favor side-sleeping. Even for side-sleeping, the edges don't improve the experience for me. Instead, I would prefer the corners to be rounded out, which would result in the same shape as a normal memory foam pillow.

The Pillow Cube foam feels much firmer than the Weekender memory foam, which already feels much firmer than the Tempur-Pedic memory foam. I consider the Tempur-Pedic memory foam extra soft, the Weekender memory foam extra firm, and the Pillow Cube memory foam off-the-charts-firm, applying unwanted pressure against my ear and jaw when I use it. The Pillow Cube has a removable zippered cover, and taking it off reveals the grey foam inside. The foam reminds me of the industrial foam used to pad furniture in moving trucks or the foam used in gymnasiums.

Putting the cover back on is a daunting challenge. Imagine the difficulty of fitting a duvet cover on a duvet. The corners are always annoying to fit into the cover. Now imagine there are eight corners instead of four corners, as well as eight edges that also need to fit into the proper place in the cover. The most difficult part, though, is getting the foam into the zipper opening in the first place. The zipper sits along the long edge of the pillow, and even though the long edge measures 24 inches, I measure the zipper opening at only 19 inches in length. As a result, the challenge is to fit an ultra firm 24 inch by 12 inch by 5 inch block of foam through a one-dimensional line-shaped zipper opening that measures 19 inches long.

If you want a pillow that is as firm as possible, then the Pillow Cube might be an option, but I would recommend trying the Weekender first because the Weekender memory foam is already very firm. If you want a pillow designed for side-sleepers, I would recommend looking at an adjustable pillow like Saybrook or Coop.

Update (1 year later): I tried the newest version of the Pillow Cube Pro, and it seems they updated the firmness of the foam from much too firm to medium firm. They also updated the zipper opening for the cover to wrap around. These are welcome updates for this pillow. Unfortunately, at the new firmness level, the pillow is now too thin when I lay my head down because it has more give. The pillow went from angling my head upward to angling it downward. They advertise that side-sleepers need a pillow that fits the shoulder gap, but this pillow does not solve the problem. If you are a side-sleeper, you need a pillow that is adjustable to fit your shoulder gap. Adding a right angle does not solve anything.