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Casper vs. Lull Mattress Comparison

The Casper and Lull mattresses are both popular all-foam beds with many similarities. Because they have so much crossover, we break down their differences to help you decide which is right for you.

Comparing Casper & Lull Mattresses

The Casper Original is a medium (6/10) foam bed with an accommodating, neutral foam feel that works for all sleeper types who are lightweight or average weight. The Lull mattress is a slightly firmer (6.5/10), similar foam model that works for all heavyweight and average weight sleepers as well as lightweight sleepers who prefer a firmer feel.

Both are all-foam, bed-in-a-box mattresses beds with affordable price points, with a neutral foam feel, and that feature polyfoam, memory foam, and proprietary foam in their constructions. At the end of the day, we recommend the Lull for people who like firmer all-foam mattresses and the Casper for people who like softer, conforming foam mattresses. Our mattress comparison below goes into more detail about the differences between these popular bed-in-a-box options to help you decide which is right for you.


  • Feel—The Lull’s top layer of memory foam gives it more of a true, soft sinking memory foam feel when you initially lie down
  • Support–The Casper features a zoned support layer and the Lull does not
  • Comfort Layers—The Lull has memory foam on top of polyfoam, and the Casper has polyfoam on top of zoned memory foam
  • Cost—The Lull is more affordable than Casper, and Lull offers discounts more often
  • Height—The Lull is 10” thick and the Casper is 11” thick


  • Style—Both are all-foam mattresses that use a blend of memory foam, polyfoam, and proprietary foam
  • Feel—Both have a relatively neutral foam feel that isn’t too soft or too firm
  • Firmness Setting—Both fall in the medium to medium firm range of the firmness scale
  • Sleeping Positions—Both are suitable for all sleeper types (back, stomach, side)
  • Sleeper Type—Neither is supportive enough for heavyweight sleepers- see our picks for the best mattress for heavy people
  • Motion Isolation—Both mattresses offer good motion isolation
  • Edge Support—Both offer better-than-average edge support for foam beds

If you find yourself sleeping in all positions, see our recommendations for the best mattress for combination sleepers.

Casper Original

The original mattress that made the brand famous, the Casper is known for its design that suits all sleep positions. Casper's Zoned Support feature is engineered to support the hips, shoulders and back to keep the spine aligned. At an affordable price point, too, this mattress is hard to beat.
Casper Original Mattress
4.8 / 5.0


Trial period

100 nights


10 year warranty

Who the Casper Mattress is Best For 

Best For…

  • Sleepers who want a balance of support and contouring
  • Lightweight and average weight sleepers
  • Couples looking for motion isolation and noise reduction
  • Shoppers who want a mattress that’s made in the U.S.A.

May Not be Best For…

  • Shoppers looking for a responsive mattress
  • People who sleep very hot
  • Heavyweight sleepers

Read our full Casper mattress review to learn more! 


Lull offers a well-rounded mattress with a thoughtful design that addresses the typical issues with traditional mattresses. Expect temperature regulation, advanced support, good motion isolation and lasting durability.
lullbasic e1609879904731
4.6 / 5.0


Trial period

365 days


Lifetime warranty

Reason to buy

Well-rounded affordable mattress

Who the Lull Mattress is Best For 

Best For…

  •  Shoppers on a budget
  • Sleepers who want a balanced, memory foam feel that’s a little firmer
  • Average weight and heavyweight sleepers
  • Couples looking for motion isolation and noise reduction

May Not be Best For…

  • Shoppers looking for a very responsive mattress 
  • People who sleep very hot
  • Most lightweight sleepers
  • Shoppers who want a mattress that’s made in the U.S.A.

Read our full Lull mattress review to learn more! 

Deciding Between Casper & Lull

Firmness / Feel

Firmness refers to how soft or firm a bed feels to an individual sleeper. Mattresses are rated on a 1 to 10 scale for firmness, and both the Casper and the Lull are medium-firm beds with 6/10 and 6.5/10 ratings, respectively. The Lull is just a hair firmer than the Casper, which is due to the density or thickness of its polyfoam comfort and support core layers.

We think it will be too firm for most lightweight sleepers, but its edge on the Casper in this category also makes it just supportive enough for most heavyweight sleepers. If you like a moderate firmness level, go with the Casper, and if you like a firmer foam mattress, go with the Lull. 

It’s also important to note that the beds will vary slightly in feel. Both offer a neutral foam feel, which means they won’t sink deeply like traditional memory foam beds but won’t feel uncomfortably stiff, either. However, the Lull’s inversion of polyfoam and memory foam (the Lull’s memory foam layer is on top) help it give sleepers a little more of that soft memory foam feel when they lie down. This doesn’t mean that the Lull is softer, but rather that sleepers will experience a little more of that sinking sand feel when they initially get into bed. The Lull may provide better pressure relief and therefore is the better mattress for side sleepers.

Motion Isolation

Motion isolation refers to how well a bed distributes or stops motion transfer across its surface when an individual gets in or out of bed or shifts positions. It’s an essential quality in the best mattresses for couples who tend to wake to one another’s movements throughout the night. All-foam beds like the Lull and the Casper tend to excel in this category when compared to hybrid and innerspring models. The Lull and Casper both isolate motion to a significant extent.

Edge Support

A bed’s edge support is determined by how much sinkage occurs when individuals lie or are seated near the perimeter of the mattress as well as how much its edges sink over time. Foam beds perform poorly in this category when compared to hybrid and innerspring beds, which have supportive coil cores to improve overall durability and support. The Lull and the Casper have better-than-average edge support for all-foam mattresses, but both models will experience some sinking and impressions over time.

Pressure Relief 

A bed’s ability to alleviate painful pressure points is closely tied to how contouring its comfort layers are. Beds with thick, plush comfort layers tend to offer more conforming for heavy parts of the body while beds with thin comfort layers offer very little. Pressure relief will also vary by sleeping position; for example, side sleepers will need deeper contouring and pressure relief in the hips and shoulders, which come into direct contact with the mattress in this position.

Both beds have similar comfort layer materials and thicknesses and relieve pressure in all sleeping positions nicely. The Casper is better suited for lightweight and average weight sleepers looking for pressure relief, and the Lull is supportive and conforming enough to provide pressure relief for heavyweight sleepers- both a good side sleeper mattress.

Spine Alignment 

The spine’s natural and healthiest shape is an ‘S-curve,’ which you may remember from your anatomy classes. Mattress firmness, construction, and conforming can either encourage or impede spinal alignment depending on your sleeping position and body type.

For example, stomach sleepers achieve proper spinal alignment on a mattress that’s firm enough to distribute the body weight evenly across its surface, which will prevent sinking in the torso and hips. Side sleeping requires deeper conforming to achieve spinal alignment. The Casper and the Lull have properties that can encourage spinal alignment, but their ability to do this varies by sleeper body type and sleeping position. For other mattresses that protect the spine and the pressure points, check out the best mattress for back sleepers.

Related: Best Mattresses for Back Pain


The average lifespan for a mattress is seven to ten years. Hybrid, latex and innerspring mattresses tend to last longer than foam mattresses because their materials are more durable and supportive. Foam beds are prone to impressions over time, and the Casper and Lull are no exception. Both have an average lifespan of seven years, and you can encourage the health of the mattress and prevent body impressions by rotating them every six months.


When we sleep, body heat can build up throughout the night on certain materials, like memory foam and polyfoam. Beds with coil support cores, low density comfort layers, and special features, like gel-infused or copper-infused foams, tend to sleep cooler than others. The Casper and the Lull are all-foam beds that sleep temperature neutral, but if you’re looking for a bed that sleeps extra-cool, we recommend a hybrid or an innerspring model. Check out our list on the best cooling mattresses for more options.

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Lull vs. Casper: The Lull (left) and the Casper (right) are both all-foam mattresses.

Casper vs. Lull Mattress Construction 

Casper Lull
Cover Recycled polyester and cotton blend Polyester and rayon blend
Comfort Layer  1.5” polyfoam 1.5” gel memory foam
Transitional Layer 2” zoned memory foam 1.5” polyfoam-latex blend
Support Layer 7” high-density polyfoam 7” high-density polyfoam
Mattress Thickness  11” 10”

Casper Construction

The Casper is an all-foam mattress constructed with layers of memory foam, polyfoam, and proprietary foam, and it measures 11” tall.

The cover of the Casper features a blend of recycled polyester, cotton, rayon, and lycra. Its comfort layers include a top layer of 1.5” of polyfoam and a second layer of 2” of memory foam. The polyfoam on top gives the Casper its light bounce and more responsive feel than the Lull. The zoned memory foam layer beneath is soft and helps provide varying levels of support to different parts of the body. There is no transition layer in the bed.

The Casper’s support core is 7” of high-density polyfoam, which is dense enough to support lightweight and average weight sleepers in all sleeping positions. The support core also reinforces the mattress’ perimeter to encourage edge support. Overall, the mattress combines ample support for all sleepers from the thick polyfoam layer and moderate cushioning from the deep comfort layers.

Lull Construction

The Lull mattress is a mixed foam bed constructed with three foam layers, just like the Casper.

The cover is a blend of polyester and rayon and has a stretchy feel. It has 1.5” of memory foam and 1.5” of polyfoam-latex blend in the comfort section, but the order is swapped: the memory foam is on top in the Lull’s construction, whereas the polyfoam is on top in the Casper’s construction. The Lull’s prioritization of memory foam in the comfort layer allows it to give more of a true, viscous, deep sinking memory foam feel than the Casper.

The core of the Lull features 7” of high-density polyfoam support foam, which adds support for the foam layers above it and helps give the bed its medium-firm (6.5/10) feel.

Both of these mattresses are medium-firm and may cause stomach sleepers to sink too deeply into the foam layers. For other picks, see our choices for the best mattress for stomach sleepers.

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Sizing & Price Comparisons

  Casper Price  Lull Price
Twin $595 $649
Twin XL $695 $699
Full $995 $849
Queen $1,095 $949
King $1,295 $1,349
California King $1,295 $1,349

For the best deals, see our Casper Mattress Coupons & Lull Mattress Coupons

Shipping and Returns for Casper & Lull

You’ll get the standard in the industry with both of these mattresses, which includes free shipping, a 100-night trial, free returns, and a full refund if you don’t want the bed. However, Lull’s trial period is a full-year. Both of these online mattresses are available at their respective websites and at third-party retailers like Amazon. Shipping and trial policies may vary depending on where the bed is purchased.

Both mattresses ship compressed as a bed-in-a-box and take roughly one week to arrive from the date of purchase. If you decide to return either mattress within the trial period, the company will arrange pickup and provide a full refund.

More Casper Mattresses

Casper Wave Hybrid

The Casper Wave Hybrid strikes a balance with a middle-of-the-road firmness level and features that make it appropriate for sleepers of all shapes and sizes. It’s an excellent choice for those who enjoy the Original Casper’s balance of conforming support but want more bounce.
Casper Wave Hybrid Mattress

See our full Casper Wave Hybrid Mattress Review to learn more.

Casper Nova Hybrid

Extra plush foam makes this Casper's softest hybrid mattress yet. With seven zones of specialized support, this mattress is not too plush, and your spine should stay aligned all night. The cradling comfort foam combines with two layers of perforated cooling foam that promotes air flow and prevents heat trapping.
nova hybrid plain room xl 1

See our full Casper Nova Mattress Review to learn more.

Our Casper vs. Lull Final Review

The Casper and the Lull are so similar in style, construction, price, and firmness setting that it can leave your head spinning. Both are mixed-foam mattresses with a medium feel that sleep temperature neutral and work for a variety of body types.

To help keep it simple for you, here’s who we recommend each for. The Casper is best for lightweight and average weight sleepers who enjoy a softer, conforming, neutral foam feel. The Lull’s medium-firm setting and top layer of memory foam make it a better choice for average weight and heavyweight sleepers who like a firmer foam mattress that still offers some of that deep sinking memory foam feel when you first crawl into bed.