Our Casper vs. Purple Mattress Comparison For 2023

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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?

In our comparison between the Casper and Purple mattresses, we’ll look at the materials, feel, support, and other features to help you determine which mattress suits you best.

Casper Original Product Image
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  • Multi-zoned support
  • Breathable AirScape™ foam
  • 10-year warranty
  • Casper Review
Product Image of Purple Mattress
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  • Dual-layer comfort core
  • Hypoallergenic
  • Pressure-relieving GelFlex Grid
  • Purple Review

Who I’d Recommend the Casper For

  • People with back pain – The Casper Original mattress has a middle support layer with three ergonomic zones. This provides variable support for different parts of your body, so you may notice the mattress is firmer under the hips and stomach but softer under the shoulders. The zoned support helps promote healthy spine alignment in different positions which keeps pressure off your lower back.

  • Average-weight sleepers – People who weigh 130 to 230 pounds should be the best fit for this Casper mattress. The bed has a medium-firm feel that should provide a good balance of pressure relief and support for average-weight sleepers.

  • Lightweight stomach sleepers – Stomach sleepers who weigh under 130 pounds should like the Casper’s mid-range firmness and zoned support that keeps the hips raised and spine aligned.

Who I’d Recommend the Purple For

  • Hot sleepers – The Purple mattress has a unique, temperature-neutral grid system with 1,400 air channels designed for continuous airflow. This grid is also infused with gel so the construction is unlikely to overheat.

  • People with pressure build-up – This mattress uses a two-inch Purple GelFlex grid to cradle your shoulders, hips, and other sensitive areas. The grid envelopes your body which helps relieve pressure and tension and prevents it from building up again.

  • Combination sleepers – The Purple’s grid promotes a high level of responsiveness by quickly adapting to your movements.Combination sleepers who switch between their back, stomach, or side should find it easy to change positions, making transitions seamless.

Comparing Casper vs. Purple: Top Similarities

  • Pressure relief – Both the Purple and Casper mattresses rank high in the pressure relief department. Although the way they achieve pressure relief looks a bit different – the Casper uses foam exclusively while the Purple combines foam with its proprietary grid – the level of pressure relief is high in both mattresses.
  • Firmness level – The Casper and Purple beds are both rated a 6 out of 10 on our firmness scale, which means they’re medium-firm. This firmness level is versatile and can appeal to a wide range of sleepers since it provides a nice balance of support and comfort.
  • Sinkage and bounce – The construction and firmness of both the Casper and the Purple promote equal levels of bounce and sinkage. Both beds allow gentle cradling and a bit of bounce to make repositioning easy, although most sleepers may find the Purple slightly more responsive due to its spongy grid.

Comparing Casper vs. Purple: Key Differences

  • The height – Although both beds are made from foam, the Casper is slightly taller than Purple, standing at 11 inches. The Purple is 9.5 inches, so it may be a better option for those looking for a thinner bed.
  • The price – The Purple is more expensive in some sizes, while Casper is more expensive in others, so expect to see variations depending on the size you’re interested in. The difference is only about 100 dollars
  • Mattress construction – The Casper has a classic memory foam mattress design while the Purple combines foam with a hyper-elastic polymer grid. Even though each mattress lands at the same spot on your firmness scale, the variation in construction gives each bed a slightly different feel. Expect more of a ‘sink’ sensation with the Casper, while the Purple may feel more bouncy and responsive due to the flexible grid underneath.

Comparing Firmness, Support & Feel


On a 10-point firmness scale where 10 is the hardest, we rated both the Casper and the Purple a 6 out of 10. Since both mattresses have a medium-level of firmness, i.e. a balance of comfort and support, they should cater well to side, back, and stomach sleepers.

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

Mattress Firmness Level 6


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). The Purple’s support system relies on its grid, followed by two layers of poly foam that help support the body in a healthy posture.


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.

On the other hand, Purple’s polymer grid layer makes it feel different than most mattresses on the market. 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 is a different feel than its competition, 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. Side sleepers tend to sink deeper than back and stomach sleepers of similar weights.

The 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.

Comparing Motion Transfer

Each bed performs well in the motion transfer category. 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, 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.

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.

The Casper uses proprietary AirScape™ foam, which contains thousands of perforations for constant airflow. On the other hand, the Purple has a hyper-elastic polymer that uses hundreds of tiny spaces to provide a temperature-neutral surface. As a result, 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.

original Casper bed layers image graphics
  • The top layer has Casper’s proprietary AirScape™ foam. The foam helps with temperature regulation and also has some bounce to make getting in and out of bed easy.
  • The second layer’s Zoned Support™ structure places firmer memory foam center in the bed around where the hips typically rest. 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.

Layers of the Purple mattress updated
  • The first layer consists of a GelFlex™ grid unique to the brand that is 2 inches thick and temperature neutral. 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 additional layer of cushioning.
  • The base layer includes a 4-inches poly foam foundation that supports the mattress.

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.
SizeCasper Price (w/o discount)Purple Price (w/o discount)
Twin XL$995$999
Cali King$1,695$1,799
Split KingN/A$1,998

Casper vs. Purple Compared Side-by-Side

CoverPolyesterViscose, Lycra, and polyester
MaterialsAirScape™ comfort foam, memory foam,
and poly foams
Hyper-Elastic Polymer Grid™ and poly foams
CoolingOpen-cell top layer and memory foam placed lower in bedTemperature-neutral Hyper-Elastic Polymer™
Motion TransferMinimalMinimal
Edge SupportGoodGreat
SinkageGentle cradleGentle cradle, depending on position
Warranty10-year limited10 years
Trial Period100 nights100 nights
Adjustable Base CompatibleYesYes
ShippingShips to U.S. and Canada

Ships to the U.S. and Canada. Additional fees apply for Alaska and Hawaii
Made in the USANoYes
Read Full ReviewCasper Mattress ReviewPurple Mattress Review
Shop NowCasper MattressPurple Mattress

Final Thoughts

These two online brands are comfortable and durable but accomplish their missions in different ways. Which one sounds more like your style?

The Nectar is more affordable and has excellent cooling thanks to its gel memory foam. However, it offers a deep hug and doesn’t have much bounce, so think about if this would suit your needs. On the other hand, the Purple offers better support and has more bounce, which may be important for sexually-active couples, combination sleepers, and people with limited mobility. 

Although both mattresses are made from high-quality materials and should last years, preference-based features can help you figure out which one would be better for you.

Casper Original Product Image
Check pricing and availability by clicking the button below
  • Multi-zoned support
  • Breathable AirScape™ foam
  • 10-year warranty
  • Casper Review
Product Image of Purple Mattress
Check pricing and availability by clicking the button below
  • Dual-layer comfort core
  • Hypoallergenic
  • Pressure-relieving GelFlex Grid
  • Purple Review

Jill Zwarensteyn is the editor for Sleep Advisor and a certified sleep science coach. She is enthusiastic about providing helpful and engaging information on all things sleep and wellness.

Based in Los Angeles, she is an experienced writer and journalist who enjoys spending her free time at the beach, hiking, reading, or exploring new places around town.

She’s also an avid traveler who has a personal goal of being able to successfully sleep on an airplane someday.

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