ISO-COOL Traditional vs Casper Pillow Review

We receive free products to review and participate in affiliate programs, where we are compensated for items purchased through links from our site. See our disclosure page for more information.

The main difference between these two pillows is their filling. ISO-COOL Traditional features solid memory foam while Casper’s pillow-in-a-pillow design is all about polyester filling that mimics down. What do they have in common? Both are hypoallergenic. Find out more about these pillows in my full comparison.

Splendorest Iso-Cool Traditional Pillow

Splendorest Iso-Cool Traditional Pillow

The Iso-Cool Traditional-Shaped Memory Foam Pillow could be a great introduction to memory foam pillows for any stomach sleeper that may be curious.

Mattress Clarity Score
4.10 / 5
Read Full Review
 

Casper Foam Pillow

Casper Foam Pillow

The brand’s most popular offers a “pillow-in-a-pillow” design that with a crisp cotton cover and down alternative feel.

Mattress Clarity Score
4.20 / 5
Read Full Review
Check Price
 

ISO-COOL Traditional vs Casper Pillow: Top Similarities

  • Traditional-shaped
  • 100% cotton outer covers
  • Removable and washable portions/covers
  • Hypoallergenic
  • Warranties available
Related: Best Pillow for Side Sleepers Pillow Reviews: Iso-Cool Traditional vs. Casper

ISO-COOL Traditional vs Casper Pillow: Key Differences

ISO-COOL Traditional

  • Solid piece of ventilated Visco-Elastic memory foam filling
  • 300-thread count 100% cotton cover, made with Outlast Adaptive Comfort material
  • Endorsed by American Sleep Association (ASA)
  • One size available per type of pillow
  • 5-year warranty
Read our full ISO-COOL Traditional-Shape Memory Foam pillow review, here. Iso-Cool Traditional Shaped Foam Pillow Review

Casper

  • Pillow in a pillow design
  • Outer Filling: Polyester fibers
  • Inner Filling: Nearly one billion coated fibers
  • Inner and Outer Cover Fabric: 400 thread count 100% Supima Cotton, Percale weave
  • Fill is sourced in South Korea and assembled in the USA
  • Standard and King sizes available
  • 10-year warranty and a 100-night trial
Read the full Casper Pillow review, here. Casper Pillow Review

Who Might Choose ISO-COOL Traditional…

  • Stomach sleepers who prefer foam. The ISO-COOL pillow is thinner than many foam pillows, making it a great fit for stomach sleepers who would like to try a little more support than a down or down alternative can provide.
  • Sleepers who prefer a pillow that won’t’ change shape. The ISO-COOL pillow is a solid piece of foam, which means sleepers won’t have any issues with it changing shape or going flat. The responsive foam will regain its original shape seconds after sleepers lift their heads/necks off of the pillow.

Splendorest Iso-Cool Traditional Pillow

Splendorest Iso-Cool Traditional Pillow

The Iso-Cool Traditional-Shaped Memory Foam Pillow could be a great introduction to memory foam pillows for any stomach sleeper that may be curious.

Mattress Clarity Score
4.10 / 5
Read Full Review
 

Who Might Choose Casper…

  • Sleepers who love down pillows. Both the inner and outer pillows are filled with polyester – a down alternative – and give the feel of a down pillow.
  • Customers who want to wash the entire pillow. In the case of spills or accidents, Casper is the easiest to care for. Simply separate the inner and outer pillow and throw them both in the washing machine and dryer.
  • Back or side sleepers. The 2” gusset on the Casper pillow provides more loft and additional filling which gives it more height and support than a lot of down alternative pillows. Based on my experience, this makes it a good fit for.

Casper Foam Pillow

Casper Foam Pillow

The brand’s most popular offers a “pillow-in-a-pillow” design that with a crisp cotton cover and down alternative feel.

Mattress Clarity Score
4.20 / 5
Read Full Review
Check Price
  Iso-Cool Traditional vs Casper

Who Could Go with Either…

  • Those who have allergies. The memory foam and polyester fibers in each of these pillows are hypoallergenic, which means those who can’t enjoy true down or have dust mite allergies will be comfortable with either the Iso-Cool Traditional or Casper pillow.

Overall

When it comes to comfort, both of these pillows excel – but may suit certain types of sleepers over others. The ISO-COOL Traditional is a thinner, breathable foam pillow that might be just what a stomach sleeper needs. Casper’s pillow-in-a-pillow design mimics the feel of cozy down but is adjustable and can be a wonderful pillow for back and side sleepers who don’t mind sinking into their pillow a little. Stomach sleepers can remove the inner pillow and use that if they prefer. Both pillows come with warranties and the Casper pillow comes with a trial period.

Subscribe to Mattress Clarity!

Get special coupons, discounts, and giveaways!

Katie Golde

Katie Golde

Senior Digital Content Manager/Managing Editor​

About Author

Katie Golde is a Certified Sleep Science Coach and previously served Managing Editor and Head of Sleep Research for Mattress Clarity. She handled the daily operations of the site and you’ll still see her in plenty of reviews, from mattresses to travel pillow and bed pillow reviews – plus the occasional How-To video. In addition, Katie reported, writed, and edited sleep health and sleep industry news for the site.

Since joining the Mattress Clarity team in 2016, she has reviewed hundreds of sleep products, like bed pillows and mattresses and written over 200 sleep-related stories for the site. She probably knows more about bamboo sheets and bed pillows than any one person should.

Katie has been writing about wellness-related topics, including sleep, for the last eight years. The first sleep story she wrote covered the best and worst foods to eat before bed. Her previous work can be found in print and online publications like Discover Magazine, USA Today, Bustle and The Huffington Post.

She has a bachelor’s degree in Sociology from Northwestern University and a master’s degree in Journalism with a focus on Interactive Publishing from Northwestern’s Medill School of Journalism as well. During her graduate studies, Katie focused on health and science reporting and she received the G.D. Crain Award for demonstrating leadership, management, and entrepreneurial excellence during her final innovation project.

Education & Credentials