Our Casper vs. Purple Mattress Comparison For 2024

Written by Loren Bullock, Lead Product Tester

Our Testing Process

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In This Article

Casper vs. Purple: which of these well-known beds is best for you?

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Casper vs. Purple compares a well-known mattress authority and a science-oriented brand with materials determined to take the market by storm.

Which mattress will come out on top? A versatile memory foam bed with a spine support system or a unique polymer grid that combines responsiveness with pressure relief?

For this comparison between the Casper and Purple mattresses, I tested the Casper mattress while Julia was Team Purple. We’ll look at the materials, feel, support, and other features to help you determine which mattress suits you best.

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Comparing Firmness, Support & Feel

Firmness

On a 10-point firmness scale in which 10 is the hardest, Julia said the Purple is 4 out of 10, which we’d call a medium-soft. 

I tested the Casper, and I feel it’s a 6 out of 10, offering a sensation of foam that cradles your body without letting you sink too far. Casper contains Zoned Support™, which delivers extra firmness in the center to help hold the hips level with the rest of the spine. The Purple may feel slightly firmer to stomach and back sleepers since the grid offers slightly less sinkage than the Casper’s topmost layer of foam.

Read More: Mattress Firmness Guide

Support

Support is important for spine alignment, regardless of the sleeping position you prefer. However, some people need more or less support depending on their weight and preferred sleeping position.

The Casper has Zoned Support™, which helps ensure the hips stay aligned in different positions, but mostly for those who weigh 130 to 230 pounds (heavyweight sleepers may sink a bit more, which could cause spine misalignment).

Feel

I think the Casper has a quick response time because its memory material is below proprietary materials. Even though it has the benefits of memory material, it evades the slow-rising response of typical memory foam beds.

 “The Purple’s feel is harder to describe,” according to Julia. She describes the feel as “ a squishy, rubber stress ball.” The quick-responding grid beneath the cover shifts with your body as you adjust on the mattress. 

This gives the Purple a spongy, bouncy feel, and even though it has a different feel than its competition, we think it should be comfortable for most sleepers.

Comparing Sinkage and Bounce

Both beds have a gentle cradling effect and an overall medium cushioning depth. However, the Purple’s sinkage depends on the amount of pressure applied to the polymer grid, which stands out with side sleepers whose weight rests in a narrower area. We often find that side sleepers tend to sink deeper than back and stomach sleepers of similar weights.

I found that Casper’s bounce comes from its proprietary comfort top layer. Purple’s slightly higher bounce level is due to its Hyper-Elastic Polymer™ top layer, otherwise known as GelFlex™.

By combining medium-level sinkage, quick responsiveness, and bounce, repositioning is easy on both brands, though slightly enhanced with the Purple because of its flexible grid.

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Comparing Motion Transfer

Each bed performs well in the motion transfer category. We found that there is relatively high motion isolation in both the Casper and the Purple, so light sleepers that have partners, kids, or pets shouldn’t be bothered at night. This is due to the fact that both beds are made out of foam. 

However, I think the Casper should isolate motion a bit better than the Purple. The Purple’s grid makes it bouncier, while the Casper’s all-foam design absorbs the most motion.

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Comparing Cooling

All-foam mattresses tend to overheat because the materials are dense and often have trouble promoting airflow. However, both the Purple and the Casper found a way to avoid this problem by incorporating breathable features into their constructions.

“Purple is going to sleep cooler than the Casper”, according to Julia. The Casper uses proprietary AirScape™ foam, which contains thousands of perforations for constant airflow. On the other hand, the Purple mattress has a hyper-elastic polymer that uses hundreds of tiny spaces to provide a temperature-neutral surface. As a result, we think the bed is unlikely to overheat, even for hot sleepers.

Comparing Construction (Materials & Quality)

Casper Construction

Casper is an all-foam mattress that comes compressed and delivered to your house in a box. The construction features three layers and is 11 inches tall, so it’s not the tallest mattress out there. Its zip-off cover consists of a soft white top and gray sides made of thick polyester.

• The top layer has Casper’s proprietary AirScape™ foam. This foam has holes poked through for airflow, helping with temperature regulation. It also gives some bounce to make getting in and out of bed easy.
• The second layer’s Zoned Support™ structure feels firmer at the head and feet and softer toward the middle. I found the foam is softer for the upper and lower extremities, which often need extra pressure relief.
• The base layer contains a piece of durable, dense poly foam support. This layer adds stability and prevents sagging while also supporting the upper comfort layers.

Purple Construction

The Purple has foam layers underneath a grid of hyper-polymer elastic. The company ships it in a bag, which is similar to shipping in a box with the exception that the bag is reusable and comes with handles.

The brand’s classic white cover looks crisp and feels soft with its viscose blended with Lycra and polyester materials. Its zip-off cover envelops a 9.5-inch tall mattress.

• The first layer consists of a GelFlex™ grid unique to the brand that is 2 inches thick and temperature neutral. “This hyper-polymer material is the primary comfort layer,” Julia shared. The cells bend and buckle to give pressure relief and support where needed. The grid is also durable and serves to protect the layers underneath.
• The second layer contains a 3.5-inch piece of transitional poly foam. This foam layer helps with responsiveness and adds an extra layer of cushioning.
• The base layer includes a 4-inch poly foam foundation that supports the mattress.

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Comparing Company Policies & Price

• Warranty – Both Casper and Purple offer a 10-year warranty.
• Shipping – Casper ships the mattress for free in the U.S. and Canada. There’s an additional fee for shipping to Alaska, Hawaii, Yukon, Nunavut, and N.W.T. Purple also ships to the U.S. and Canada, but additional fees apply for Hawaii and Alaska. They don’t ship to U.S. Territories.
• Trial Period – Both brands offer a 100-night trial for you to test their product and ensure it’s the right fit for you.
• Returns – Sleepers can return their Casper mattress for free and get a full refund only after keeping it for at least 30 days and submitting a return request before the trial is up. For the Purple mattress, you also have 100 days to return it but have to keep it for at least 21 days.
• Price – There’s a price difference between the Casper and the Purple, Depending on the size you choose, you can expect about a 100-dollar difference between the brands. However, some sizes have relatively similar prices.

Size	Casper Price (w/o discount)	Purple Price (w/o discount)
Twin	$895	$799
Twin XL	$995	$999
Full	$1,195	$1,199
Queen	$1,295	$1,399
King	$1,695	$1,799
Cali King	$1,695	$1,799
Split King	N/A	$1,998