Purple vs. Amerisleep Mattress Comparison

Comparing Purple mattresses with just about any other bed is easy—there simply isn’t anything else like it on the market. But that doesn’t mean it can’t be matched for comfort and functionality. Today we’re putting the Purple next to Amerisleep’s AS3 mattress to see how they perform across the most important mattress criteria.

From this comparison you can expect to learn about differences in feel, construction, materials, and prices. We’ll wrap up with tailored recommendations for who we think will love each of these very different mattresses.

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Side-by-Side Overview

Key Similarities

• The Purple and Amerisleep AS3 received the exact same score for cooling in our lab evaluation (8/10). They both incorporate temperature regulation technologies that keep you cool all night long. 
• They also both scored the same for responsiveness, which measures how well a mattress responds to changes in pressure. The Purple and AS3 do a good job of returning to their original form when you change positions.
• The AS3 and Purple land at a similar place on the firmness scale. The Purple is a medium-firm mattress (6.5/10), and the AS3 is medium mattress (6/10). 6-6.5/10 is the only firmness option available for both beds. This firmness level is also called the Goldilocks feel, since it’s not too soft and not too firm. (For more Amerisleep firmness options, check out the AS1, AS2, AS4, and AS5.)

Key Differences

• The most noticable difference between these beds is the comfort layer. Purple’s top layer is a Hyper Elastic Polymer grid that relieves pressure. AS3’s comfort layer is made of contouring Bio-Pur foam.
• The prices and warranties for the Purple and AS3 mattresses are very different. The AS3 is $200-$400 more expensive than the Purple, but it also has a 20-year warranty, which is twice as long as Purple’s 10-year warranty. 
• These beds shine in different areas. The Purple mattress does a better job of keeping your back straight while you sleep. Spinal alignment is important for avoiding back pain from your mattress. The Amerisleep AS3 scored higher on motion transfer. We test this category by rolling on the mattress with a glass of red wine on the other side of the bed. It goes without saying that the wine did not spill on the AS3.
• The AS3 mattress is made only of foam, whereas the Purple is technically a hybrid mattress, meaning it’s not all-foam and not only innerspring or pocketed coils.  

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Compare Mattress Sizes

The chart below compares the dimensions for the Purple and Amerisleep AS3 mattresses. The biggest difference is the mattress thickness. 

	Purple	Amerisleep
Thickness	9.25″	12”
Twin	38″ x 75″	38” x 74”
Twin XL	38″ x 80″	38” x 80”
Full	54″ x 76″	54” x 75”
Queen	60″ x 80″	60” x 80”
King	76″ x 80″	76” x 80”
California King	72″ x 84″	72” x 84”

Learn more about mattress sizes.

 

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Purple vs AS3 Prices

Take a look at the different price points for the original Purple and AS3 mattress models. 

	Purple	Amerisleep
Twin	$649	$1,099
Twin XL	$749	$1,149
Full	$949	$1,249
Queen	$1099	$1,399
King	$1399	$1,699
California King	$1498	$1,699

 

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Compare the Layers

We’ve talked a lot about the different strengths and highlights for the Purple and AS3 mattresses. Next, we’ll cover mattress construction and the individual layers.

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Compare Mattress Advisor Scores

We tested the Purple and Amerisleep AS3 mattresses to see how they performed across 14 criteria. You can compare their scores in the chart below.

	Purple	Amerisleep
Shipping	7	8
Trial Period	9	9
Return Policy	10	10
Warranty	9	10
Set-Up Test	6	9.5
Motion Transfer Test	7.5	8.75
Edge Support Test	8.5	8
Pressure Relief Test	8.5	7.75
Spinal Alignment Test	9.5	8.25
Responsiveness Test	7	7
Cooling Evaluation	8	8
Durability Evaluation	9	8.5
Customer Service Score	9	9
Social Impact Score	4	4
TOTAL SCORE	8.4/10	8.4/10

 

Sleeping Position

As you peruse the scores for these mattresses, keep in mind which traits are important for your sleeping position. Side sleepers need high-quality pressure relief. The Purple mattress scored higher in this category, so you’ll feel less stress on your shoulders and hips. Back and stomach sleepers need spinal alignment. Again, the Purple received a higher score, although both performed well in this category.

Combination sleepers should choose whichever mattress works best for their dominant sleeping position, since the Purple and AS3 scored the same on our responsiveness evaluation.

Cooling and Motion Transfer

If you sleep with a partner, pay special attention to the motion transfer category. In this case, the AS3 outperformed the Purple, meaning it does a better job of isolating motion from one side of the bed to the other.

Hot sleepers or those who live in hot climates need a mattress that sleeps cool. In this category, both mattresses scored 8/10, so you’ll feel comfortable on either bed.

The Bottom Line: Which Is the Best Mattress?

The Purple and Amerisleep AS3 mattresses are very different, but both sleep cool and keep your spine aligned. We recommend Purple to Side sleepers, while we think stomach and back sleepers will feel comfy on either. Couples should notice less disruptions on the AS3. Finally, budget-shoppers will pay less for the Purple.

We don’t have a favorite between these two beds—they are just so different! Our advice? Pick the mattress that best aligns with your top 3 sleep needs, and you won’t be disappointed.

Other Purple and AS3 Comparisons

• Casper vs Amerisleep Mattress
• Casper vs Purple Mattress