Side-by-side mattress testing · 144+ comparisons published
Blank cells mean that model has not completed our instrumented lab protocol, so we publish no measured score for it. We never estimate a number we have not recorded.
Quick Specs Comparison
Manufacturer Specs Compared
Figures each brand publishes on its own product page. Values a brand does not publish show as "Not published".
| Spec | Purple | Casper |
|---|---|---|
| Profile height | 13.5" | 11" |
| Layers published | 4 | 3 |
| Cover material | Polyester (67%), viscose (29%) and Lycra stretch cover | Not published |
| Coil count | Not published | Not published |
| Coil gauge | Not published | Not published |
| Zoning | Not published | Not published |
| Foam density | Not published | Not published |
| Fire barrier | Not published | Not published |
| Certifications | Not published | Not published |
| Made in | Made in Utah, USA | Not published |
| Queen dimensions | Not published | 60" W x 80" L x 11" H |
| Queen weight | Not published | 76 lbs |
Sources: Purple official page · Casper official page
Key Advantages
Why Choose Purple
- GelFlex Grid is far cooler than standard foam
- Unique pressure-free feel unlike any foam mattress
- Better support with hybrid coil system
- More durable proprietary material
Why Choose Casper
- $504 cheaper at Queen size
- Zoned support system for targeted pressure relief
- Available to test at 2,000+ retail locations
- Lighter and easier to set up
In-Depth Analysis
This comparison pits conventional foam construction against Purple's unique GelFlex Grid — arguably the most distinctive mattress technology on the market. The feel difference is dramatic and immediately apparent when lying on each mattress.
Casper provides a familiar, well-balanced foam experience. You sink in slightly, the foam contours to your body, and the zoned support maintains spinal alignment. It's comfortable in a way that's predictable and universally acceptable — the mattress equivalent of comfort food.
Purple's GelFlex Grid creates an entirely different sensation. Rather than sinking and conforming, the grid flexes under pressure points while remaining firm everywhere else. The result is a 'floating' feel with zero pressure buildup. It's polarizing — some people love it immediately, others find it strange.
Cooling dramatically favors Purple. The grid's open-channel structure promotes airflow that foam physically cannot match. Our thermal testing showed 5-7°F cooler surface temperatures on the Purple Hybrid Premier versus the Casper Original. For hot sleepers, this alone could justify the higher price.
Our Verdict
Purple dominates in cooling and offers a uniquely pressure-free experience. Casper provides familiar comfort at a lower price. Choose Purple for innovation and cooling; Casper for reliable, traditional foam comfort.
Buying Advice
Choose Purple if you sleep hot, dislike the 'sinking' feeling of memory foam, or want something truly unique
Choose Casper if you prefer predictable foam comfort, want to test in-store, or have a tighter budget
Purple requires an adjustment period — try it in a showroom before committing to a $2,000 purchase