Head to head

Purple Mattress vs SweetNight CoolNest

By MattressDealsOnline Editorial · Updated October 2026 · Scored on five categories

Who wins what

How the five categories compare

Category by category, in detail

Cooling — Purple Mattress

Purple Mattress takes cooling at 96 against 90, a modest gap of 6 points. Cooling governs how fast the surface sheds the heat you put into it, which puts this column in front of hot sleepers above all, and couples second.

That comes straight off the build. Purple Mattress uses a GelFlex Grid, backed by soft flex knit cover.

Support — SweetNight CoolNest

Here SweetNight CoolNest leads 84 to 80, negligible at 4 points. Because support governs how well the bed holds your middle up instead of letting it settle, the gap lands hardest on back and stomach sleepers, heavier sleepers, and anyone with lower-back trouble.

You can see why in the layers. SweetNight CoolNest uses zoned transition foam, a polyfoam layer with a firmer centre that adds targeted support under the hips while staying softer at the shoulders, on the 14 and 16 inch models, backed by Dynamic Coil support core and reinforced foam perimeter.

Motion isolation — SweetNight CoolNest

Motion isolation goes to SweetNight CoolNest, 86 against 76 - a modest 10-point gap. What it decides is how far a movement travels before the bed absorbs it, and the people it decides it for are light sleepers sharing a bed, and anyone whose partner keeps different hours.

That follows from what is inside. SweetNight CoolNest uses gel-infused memory foam, backed by Dynamic Coil support core and PCMflux high-resilience foam.

Edge support — SweetNight CoolNest

Edge support goes to SweetNight CoolNest, 80 against 72 - a modest 8-point gap. What it decides is whether the perimeter holds when you sit on it or sleep right out to the side, and the people it decides it for are anyone sharing a queen, sitting on the side to dress, or carrying more weight.

That is a construction difference. SweetNight CoolNest uses a reinforced foam perimeter, dense foam encasing the edge of the coil unit so the sides hold up when you sit on them.

Value — SweetNight CoolNest, the widest gap between them

Value goes to SweetNight CoolNest, 96 against 78 - a clear 18-point gap. What it decides is whether the money is going into the mattress or the name, and the people it decides it for are anyone deciding on budget rather than on one feature.

That tracks the price directly: $499 for a queen SweetNight CoolNest against $1,199 for Purple Mattress, 140% more. Value scores what you get back per dollar, not how good the bed is outright, so a cheaper bed can win this column and still lose the matchup.

In practice, a 18-point gap here is the strongest single argument for SweetNight CoolNest on this page, and it arrives with the lower price attached, not a premium.

Construction and materials

Purple Mattress is an all-foam bed with a hyper-elastic polymer grid on top at 9.25 or 9.5 inches tall, built from 5 layers. SweetNight CoolNest is a cooling-foam-over-coils hybrid at 12, 14 or 16 inches, built from 8.

That is the root difference between them, and most of the scorecard follows from it. A memory foam bed and a hybrid do not fail in the same places: with Purple Mattress, every layer is foam, so movement dies where it starts, but there is no coil unit to move air or stiffen the perimeter. With SweetNight CoolNest, foam sits on top of a coil core, so it splits the difference - contour at the surface, airflow and edge strength underneath.

SweetNight CoolNest has a coil unit - a Dynamic Coil core of individually pocketed coils inside a reinforced foam perimeter - and Purple Mattress has none, which is the cleanest single explanation for the bounce, airflow and edge differences between them.

Both carry CertiPUR-US. SweetNight CoolNest additionally carries OEKO-TEX Standard 100.

SweetNight CoolNest is stated fiberglass-free. Purple Mattress does not publish that either way.

Bands show the order of the layers. They are not drawn to scale, because not every layer thickness is published.

Specifications

Firmness and feel, by sleeper

Purple Mattress is published at 6.0 out of 10 and SweetNight CoolNest at 6.5. That is 0.5 of a point apart, which is less than the difference body weight alone makes, so neither will feel categorically softer to everyone.

Side sleepers: both land in the usual window, Purple Mattress for average and heavy builds and SweetNight CoolNest for average and heavy. Support scores are close too, so this position is not where the decision gets made.

Back sleepers: both land in the usual window, Purple Mattress for light, average and heavy builds and SweetNight CoolNest for light, average and heavy. Support scores are close too, so this position is not where the decision gets made.

Stomach sleepers: both land in the usual window, Purple Mattress for light and average builds and SweetNight CoolNest for light, average and heavy. Support scores are close too, so this position is not where the decision gets made.

SweetNight CoolNest publishes a weight capacity of 551 lb. Purple Mattress does not publish a figure.

The windows come from what each position and body weight usually needs, applied to the firmness each brand publishes.

Price and value

A queen Purple Mattress is $1,199 against $499 for SweetNight CoolNest: $700 more, 140% more.

What the extra $700 buys is harder to point at: Purple Mattress does not lead SweetNight CoolNest by a clear margin in any scored category. On the numbers alone the premium is not buying measured performance.

Spread across the warranty, Purple Mattress works out at about $120 a year over 10 years and SweetNight CoolNest at $50 over 10. Even annualised the dearer bed stays dearer.

A twin price is not published for SweetNight CoolNest, so that size cannot be compared here.

In king: $1,699 for Purple Mattress against $599 for SweetNight CoolNest, a $1,100 difference.

Trial, warranty and delivery

Both run 100-night trials, so the trial is not a separator here.

Both arrive compressed in a box, so unboxing is a wash.

A return fee is not published for Purple Mattress, so confirm it before you buy.

Where each one wins and loses

Purple Mattress

• Cooling, 96 against 90. The GelFlex Grid is the reason: a hyper-elastic polymer moulded into a grid of buckling columns with well over 1,400 air channels, which collapses under pressure points and springs back instantly.

• Motion isolation, 76 against 86. SweetNight CoolNest leads by 10 points here, which is the gap you would be accepting.
• Edge support, 72 against 80. SweetNight CoolNest leads by 8 points here, which is the gap you would be accepting.
• Value, 78 against 96. SweetNight CoolNest leads by 18 points here, which is the gap you would be accepting.
• Dearer by $700 on a queen. $1,199 against $499, which the scorecard has to justify.

SweetNight CoolNest

• Motion isolation, 86 against 76. The gel-infused memory foam (top comfort) is the reason: the first contouring layer, drawing heat away as it cradles you, part of the DuoSense pillow top.
• Edge support, 80 against 72. The reinforced foam perimeter is the reason: dense foam encasing the edge of the coil unit so the sides hold up when you sit on them.
• Value, 96 against 78. A 18-point lead on a 100-point scale.
• Cheaper by $700 on a queen. $499 against $1,199, 58% less for the same size.
• Also certified OEKO-TEX Standard 100 and fiberglass-free. Certification the other bed does not publish.

• Cooling, 90 against 96. Purple Mattress leads by 6 points here, which is the gap you would be accepting.

Who should pick which

Buy SweetNight CoolNest if value is the thing you are actually shopping for. It leads 96 to 78 there, the widest gap between these two beds, and it wins the card overall by 6.8 points on equal weighting.

Buy Purple Mattress if you care more about cooling, because it still beats the winner there: cooling 96 against 90. Losing the weighted total does not mean losing every column, and if your priority is one of those, the ranking on this page is answering a different question from yours.

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