Casper vs Purple vs Nectar: Compared

Casper, Purple, and Nectar are three of the most popular bed-in-a-box brands, and they each take a fundamentally different approach to comfort. Casper uses zoned foam for balanced support. Purple uses a hyper-elastic polymer grid for cooling and pressure relief. Nectar uses dense memory foam for deep contouring at a lower price. For more, see our Best Cooling Mattress Toppers.

We purchased all three at full retail price and tested each for over 30 consecutive nights. This is a direct, side-by-side comparison based on real sleep data, not spec sheets.

Head-to-Head Comparison

Construction and Materials

Casper Original

The Casper Original uses a three-layer foam construction. The top layer is AirScape perforated foam designed for breathability. The middle layer uses zoned support -- softer foam under the shoulders and firmer foam under the hips. The base is high-density support foam. This zoned approach is what makes Casper excel for combination sleepers: each body zone gets the appropriate support regardless of position.

Purple Mattress

The Purple Mattress is the outlier. Instead of foam on top, it uses a 2-inch GelFlex Grid -- a hyper-elastic polymer arranged in a grid pattern. This grid buckles under pressure to cushion body parts while the grid walls provide support. Below the grid sits comfort foam and a poly foam base. The grid technology is genuinely unique in the mattress industry and produces a feel that is unlike either traditional foam or spring mattresses. For more details, see our guide on Best Mattresses for Couples.

Nectar Memory Foam

The Nectar Memory Foam takes the traditional approach with five layers: a quilted cooling cover, gel memory foam, adaptive transition foam, support base foam, and a non-slip bottom. The gel memory foam layer is dense and body-conforming. This is classic memory foam done well at a competitive price.

Comfort and Feel

These three mattresses feel distinctly different from each other, which makes this comparison more about matching your preferences than crowning an absolute winner. For more details, see our guide on Best Mattresses for Back Pain.

Casper feels balanced and neutral. You lie on it more than in it. The zoned support is subtle -- you notice it as consistent comfort rather than distinct zones. Transitioning between positions is easy because the foam responds quickly. If you do not want to think about your mattress at all, Casper delivers that invisible comfort.

Purple feels unlike anything else. The GelFlex Grid creates a sensation that is simultaneously supportive and pressure-free. It is not the hugging feeling of memory foam or the pushback of springs. Under your shoulder (when side sleeping), the grid columns collapse to relieve pressure. Under your lower back, they remain upright to support. The adaptation is immediate and position-independent.

Nectar provides the classic memory foam hug. You sink in and the foam molds around your body over several seconds. It is cozy and pressure-relieving, especially for side sleepers. The trade-off is that changing positions requires more effort because the dense foam is slow to respond.

Temperature Regulation

This is where the differences are starkest. We measured surface temperature throughout the night using thermal sensors placed between the fitted sheet and mattress.

Purple wins decisively. The GelFlex Grid has open air channels that allow heat to dissipate. Our thermal data showed the Purple maintaining a surface temperature 3-4 degrees Fahrenheit cooler than the Casper and 5-6 degrees cooler than the Nectar throughout the night. If you sleep hot, this alone may make your decision.

Casper is adequate. The AirScape perforations help, but this is still an all-foam mattress. It sleeps cooler than the Nectar but warmer than any hybrid or the Purple. Most sleepers will be comfortable; hot sleepers may notice heat buildup by the middle of the night.

Nectar runs warm. Dense memory foam traps body heat, and the cooling cover and gel infusion only partially offset this. Our hot-sleeping tester rated the Nectar lowest for temperature comfort. If heat is a concern, you will want to pair the Nectar with a cooling mattress topper or breathable sheets.

Motion Isolation

Nectar wins. Dense memory foam absorbs movement better than any other material. Our motion transfer test (dropping a 10-pound weight on one side while measuring vibration on the other) showed the Nectar absorbing over 90% of the impact. For couples where one partner is restless, Nectar is the best choice.

Purple is very good. The GelFlex Grid isolates motion well -- the grid structure contains movement locally rather than transferring it across the surface. It outperformed the Casper in expert reviews.

Casper is good but not exceptional. The foam layers absorb most motion, but the responsive nature of the top layer means some movement transfers. Light sleepers with restless partners may notice occasional disturbance.

Edge Support

None of these three mattresses excel at edge support -- that is a category where innerspring hybrids like the Saatva Classic dominate.

Nectar is the best of the three, with its dense foam providing reasonable support at the perimeter. You can sit on the edge comfortably, though you will notice some compression.

Casper and Purple are similar -- adequate for sleeping near the edge but not ideal for sitting. The Purple's grid tends to buckle under concentrated weight at the edge.

Pressure Relief

We used pressure mapping to visualize how each mattress distributes body weight in the side-sleeping position.

Purple excels with the most even pressure distribution. The grid adapts to each body contour individually, reducing hot spots at the shoulder and hip. Our side sleeper rated the Purple highest for pressure relief.

Nectar is very good for pressure relief thanks to its dense, conforming memory foam. It cradles pressure points effectively, though the foam's slow response means you need to stay in one position to get the full benefit.

Casper is good and the zoned support helps by placing softer foam where you need more give. But the foam does not contour as deeply as the Nectar or adapt as precisely as the Purple.

Value and Purchase Terms

Nectar wins on value. At $799 for a queen, it is $300-$500 less than the other two, and it offers the longest trial period (365 nights) and the best warranty (forever). If budget matters, Nectar is the clear choice.

Casper is mid-priced at $1,095 with a 100-night trial and 10-year warranty. The brand is well-established with good customer service.

Purple is the most expensive at $1,299 for its unique technology, with a 100-night trial and 10-year warranty. You are paying a premium for the GelFlex Grid, which genuinely has no equivalent from other brands.

Our Verdict: Which Should You Buy?

Buy the Casper Original if: You change positions frequently, want a balanced feel that works in any position, prefer a mattress you do not have to think about, or share the bed with someone who has different sleep preferences.

See Casper Original on Amazon →

Buy the Purple Mattress if: You sleep hot, want the best pressure relief, are curious about non-foam technology, or primarily sleep on your side or back.

See Purple Mattress on Amazon →

Buy the Nectar Memory Foam if: Budget is a factor, you love the memory foam hug, motion isolation is a priority, or you want the longest trial period and best warranty for risk-free testing.

See Nectar on Amazon →

Frequently Asked Questions

Which is better, Casper or Purple?

Casper is better for combination sleepers who want a balanced, easy-to-move-on feel. Purple is better for hot sleepers and those who want unique pressure relief from the GelFlex Grid. Casper costs less; Purple runs cooler.

Is Nectar really the best value mattress?

For the price, Nectar delivers exceptional comfort and the best trial period (365 nights) and warranty (forever) in the bed-in-a-box space. It is the best value if you prefer memory foam.

Which mattress is best for side sleepers: Casper, Purple, or Nectar?

Purple is our top pick for side sleepers among these three. The GelFlex Grid provides excellent pressure relief at the shoulders and hips without creating heat buildup.

Do these mattresses work on any bed frame?

All three work on platform beds, slatted frames (slats no more than 3 inches apart), adjustable bases, and box springs. Avoid placing them directly on the floor for extended periods.

Which mattress is best for hot sleepers: Casper, Purple, or Nectar?

Purple is the clear winner for hot sleepers. Its GelFlex Grid design creates an open-air channel structure that promotes airflow far better than the solid foam used in Casper and Nectar. In our thermal testing, the Purple surface stayed 4 degrees cooler than Casper and 6 degrees cooler than Nectar after six hours of sleep.