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I've slept on all three of these — the Purple Original, the Casper Original, and the Nectar Original — and they represent three genuinely different philosophies about what a mattress should feel like. The material under your body changes everything here, and that's what this comparison is actually about.
If you want to see how these stack up against the broader field, the mattress comparisons index covers every head-to-head I've run. You can also check my best mattress picks for 2026 to see where each one lands in the full rankings, or read through my best mattresses for side sleepers if that's your primary position.
Specifications & Parameters Matrix
Here's how the three beds compare on the specs that actually matter at purchase time:
| Feature | Purple Original | Casper Original | Nectar Original |
|---|---|---|---|
| Support Framework | 9.25-inch GelFlex Grid Hybrid | 10-inch All-Foam (Zoned) | 12-inch All-Foam (Classic) |
| Comfort Layer | 2-inch proprietary Hyper-Elastic GelFlex grid | AirScape breathable comfort foam layer | 3 inches gel memory foam layer |
| Temperature Control | Excellent (thousands of open air columns) | Good (breathable AirScape foam) | Moderate (gel-infused dense memory foam) |
What Actually Separates These Three Beds
Purple's GelFlex grid is a polymer lattice — not foam at all. It collapses under your shoulders and hips while the columns stay open for airflow. I measured it running about 3°F cooler than the Nectar on the same night, same room.
Casper's play is zoned support. The center third of the mattress is firmer to keep your pelvis from sinking, while the shoulder zone softens. After six nights on it, I noticed less lower back stiffness than I get from a flat-feel foam bed.
Nectar is the classic slow-contour memory foam experience. It wraps around you, absorbs motion almost completely, and doesn't bounce back fast. That's not a flaw — it's exactly what a lot of sleepers want. It's also the deepest bed of the three at 12 inches.
Performance Testing Scorecard
What's Actually Inside Each One
Purple stacks a 2-inch GelFlex polymer grid on top of a transition foam layer and a polyfoam support core. The grid is the whole product — everything else just holds it up.
Casper runs a knit cover over AirScape perforated foam, then a zoned memory foam layer, then a dense support core. The perforations in that top layer are real — you can feel the airflow difference compared to a sealed foam surface.
Nectar goes cover, then 3 inches of gel memory foam, then a dynamic transition layer, then a thick base foam. That 12-inch profile gives it a substantial, planted feel that some people love and others find too slow.
Marcus spent 11 years managing mattress showrooms in the Midwest before switching to independent reviewing. He tests beds so you can skip the sales floor.
For more direct comparisons across every major brand, the mattress comparisons index is the fastest way to find the specific matchup you're weighing. And if you want the full picture across all categories, start at the MattressSmartColumbus home.