One of the first things we learned in our research is that sleep positions (and their supposed need for differentiated pillows) are a myth.

Nearly everyone changes positions during the night, which is why we set out to design a single pillow that could accommodate all people and all positions.

Our Journey to the perfect Fill

For initial user testing, we slept on over 60 different kinds of pillows from around the world to find the best fill types out there.

  • Illustration (Mound of Straw)

    No buckwheat or straw

    Early on, we ruled out obscure materials like buckwheat and straw. They sound cool, but they’re not nearly comfortable enough.
  • Illustration (Foam Block)

    No Foam

    Then, we eliminated foam. While it provides excellent support in a mattress, it doesn’t work as well in a pillow because it’s too sensitive to temperature.
  • Illustration (Feather)

    No down

    Finally, we had to eliminate down. It simply doesn’t offer the springy support and push-back we were looking for — instead, it tends to flatten out when compressed.

Friendly Fibers

Ultimately, we determined the best solution was to fill our pillow with synthetic fibers, which are specifically engineered to suit a wide range of needs. They have properties that surpass down, they’re hypoallergenic, and they last longer than other fill types.

Two Layers are better than one

After 18 months of testing, we designed a dual-layer pillow. Its outer layer is breathable and soft, while its inner core is supportive and pressure relieving.

Casper Pillow

All in Good fibers

The Casper pillow’s transformative design is thanks to its cutting-edge fibers. We use extremely short and thin inner core fibers that are 1/20th the width of a human hair. Each fiber is low friction, which creates the pillow’s signature springiness.

Illustration (Relative Fiber Thickness)

The soft outer layer contains longer fibers, which create a luxurious and forgiving layer over the supportive core. Together, each Casper pillow contains nearly a billion fibers.

Illustration (Casper Pillow Layers)

A new Dimension in Comfort

To get the most out of our innovative double-layer construction, we included a structural element known as a gusset (the 2” panel that runs along the perimeter of the pillow).

It adds depth for side sleeping support and ensures consistent comfort across the pillow, so sleeping on the edge feels just as great as sleeping smack dab in the middle. Read reviews of the Casper pillow.

Illustration (Relative Pillow Dimension)

Going the Distance

While we always strive to keep our production domestic, quality of material knows no borders, and we’re committed to making the absolute best product possible. That’s why we went all the way to South Korea to discover the extremely thin, low-friction fibers that power our pillow.

Illustration (Passport)