Lull mattress

Casper vs. Lull Mattress Reviews

Trying to decide between a Lull vs Casper mattress? Use this comparison to learn which is the best mattress for you.

Are you on the hunt for a new bed? Then look no further as you consider the Casper and Lull bed-in-a-box mattresses. Both of these online mattress brands are memory foam mattresses that appeal to a wide variety of body types and sleeping positions. Plus, no matter if you decide on a Casper or Lull you will be working with a mattress company that offers a 10-year warranty and a 100-night trial period

In this review, we took a look at Lull vs. Casper and lay out all of their perks and benefits, so you can decide on the best mattress for you and get a good night’s sleep.

Lull vs Casper at Glance

Customer Rating
MA Score
Trial Period


Customer Rating
MA Score
8.9 / 10

Universal memory foam mattress for the average sleeper


Medium-firm: 6.5/10


Gel memory foam mattress

Trial Period

100 days


10-year limited warranty


Customer Rating
MA Score
9.1 / 10

Universal firmness mattress for the average sleeper


Medium-firm: 6/10


Memory foam

Trial Period

100 days


10-year limited warranty

Key Similarities:

  • Both the Lull and Casper mattresses excel in pressure relief and spine alignment, making them great choices for side and back sleepers.
  • The Casper and the Lull are both memory foam beds with a medium-firmness level. This means they both have a similar feel of soft and squishy, but still firm enough to prevent you from completely sinking into the mattress.
  • Both mattresses work for couples phenomenally well; the memory foam design lends both beds to excel at limiting motion transfer.

Key Differences:

  • The Lull is slightly less expensive than the Casper, but both beds hover around $1,000 for a Queen, making them affordable choices.
  • The Casper is better for combination sleepers, because it’s so responsive (more on this later). 
  • The Lull is a gel memory foam bed, while the Casper is an all-foam bed. You may think the gel infusion makes the Lull suited for hot sleepers, but because it’s still a memory foam mattress, it still doesn’t keep you as cool as a hybrid or innerspring bed would.

Casper Mattress Review Highlights

  • This is the original Casper mattress and their most popular model—for good reason.
  • The Casper is one of the best known foam beds and is recognized for truly appealing to average sleepers for its universal firmness level and soft foam layers. 
  • This mattress has received a perfect responsiveness score, so it is superb at adjusting to your movements while you sleep and aligning with your sleeping position
  • The Casper is a great option for combination sleepers and has also clocked the needs of side sleepers
  • This mattress company is always updating the Casper’s design and developing new and dynamic technology. They recently introduced Zoned Support, a new foam system that delivers contouring to pressure points.
  • If you’re a fan of Casper or just interested in their other models, check out the Casper Wave Hybrid and the Casper Nova Hybrid.
Lull Duvet

Lull Mattress Review Highlights

  • Like the Casper, the Lull mattress is an excellent choice for someone who is considered an average sleeper. 
  • The Lull is especially fantastic for back pain sufferers, side sleepers, memory foam shoppers, and couples.. 
  • It is a popular bed-in-a-box memory foam mattress that is medium firm on the firmness scale
  • Our testers love how well the Lull maintained spine alignment, nearly giving it a perfect score!
  • It allows couples to sleep well together through quality motion isolation while also relieving pressure points.

Compare Mattress Sizes

When looking at Lull vs. Casper for a new mattress, you will note that the two brands are identical in mattress sizes and they also almost mimic each other in thickness. The Casper is thicker by an inch, which isn’t too significant.

Thickness 10″ 11″
Twin Size 38″ x 75″ 38″ x 75″
Twin XL 38″ x 80″ 38″ x 80″
Full Size 54″ x 75″ 53″ x 75″
Queen Size 60″ x 80″ 60″ x 80″
King Size 76″ x 80″ 76″ x 80″
Cal King Size 72″ x 84″ 72″ x 84″

Learn more about mattress sizes.

Compare Mattress Prices

Lull mattresses and Casper mattresses are not only similar in size and thickness, but also in price points. The Lull Twin and Twin XL mattresses cost more than a Casper while a Casper has a slightly higher price tag for the Queen, King and California King over Lull. Casper even made the list for best mattresses under $1,000! Each company also offers 100-night sleep trials that give customers the opportunity to try out the mattress before fully committing.

Remember that the prices listed in this table are the standard offerings without any discounts, promos, or exclusive Mattress Advisor deals. To stay clued in on the best discounts for quality brands like Casper and Lull, head over to our mattress deals page.

For more detail, check out the individual price comparisons below.

Twin $649 $595
Twin XL $699 $695
Full $849 $995
Queen $949 $1,095
King $1149 $1,295
Cal King $1149 $1,295


Compare the Layers Inside

Now it’s time to take a peek inside each Casper mattress and Lull mattress to discover what makes them unique in order to help you get a good night’s sleep. But first, let’s take a look at how their respective constructions compare to one another.

The Casper has three layers of memory foam designed for optimal support and pressure relief. An aerated top layer of foam feels soft to the touch and enhances breathability. The real star of the show here is Casper’s zoned support layer; it consists of not 1, not 2, but 3 ergonomic zones designed for targeted support. This is the reason Casper’s spine alignment score is so high! This layer also assists in even weight distribution and pressure point relief. A support layer of durable foam completes the mattress, and ensures overall support.

Contrarily, the Lull has 5 layers, consisting of three memory foam and 2 covers. The Lull’s dense foam layers work in tandem to provide therapeutic support and relief, similar to the Casper. The main difference in their construction is the inclusion of gel in the Lull. The Lull’s first foam layer is injected with gel for added cooling. 

Because both the Lull and the Casper are foam beds with medium-firmness, they feel quite similar. The result is two universal mattresses that work with a variety of sleep positions and body types. If you enjoy a balanced feel on your mattress that provides soft comfort and support, you can’t go wrong with either choice.

Inside Casper Original

Inside the Casper Mattress

Comprised of three memory foam blend layers, the Casper mattress seeks to deliver relief to pressure points, offer a bouncy surface that also promotes body contouring, and eliminate heat retention.

  • Top Layer: Made of 1.5” of open cell foam, this memory foam layer offers body contouring.
  • Zoned Support Layer: This transition layer is firmer and is made up of another 1.5” of memory foam that offers support and helps maintain proper spine alignment. 
  • Base Layer: The bottom layer of the mattress offers 5” of durable support foam.

Inside the Lull Mattress

Recognized industry wide as a mattress that is medium firm on the firmness scale, the Lull is composed of three premium memory foam layers including gel memory foam that lets you sleep cooler. 

  • Breathable Top Cover: Hand-crafted and designed for airflow, this cover is soft to the touch and serves as a protectant for the rest of the layers.
  • Comfort Layer: Made up of gel memory foam, this layer promotes relief of pressure points and seeks to minimize heat retention
  • Middle Layer: This next layer offers full body support and serves as a comfort layer in the bed. 
  • Base Layer: The bottom layer is made of polyurethane foam, which makes the mattress extra durable while also delivering motion isolation. Plus, this polyfoam base layer is key in preventing sinkage and keeping the mattress from sagging in the long term.
  • Premium Mattress Cover: The cover of the mattress is one that you can remove for cleaning purposes. It is made from a rayon and polyester blend.

Compare Mattress Advisor Scores

At Mattress Advisor, we put all of the bed-in-a-box mattresses that we review through an in-depth testing and evaluation process. Our lab testing process is important because it not only assesses the mattress itself but also the sleep trial and warranty, customer service, and social responsibility of the mattress company that you are making a purchase from. Ultimately, we want you to be sure you get a good night’s sleep.

Lull Casper
Shipping 10 10
Trial Period 9 9
Return Policy 10 10
Warranty 9 9
Set-Up Test 8.5 8
Motion Transfer Test 9 8
Edge Support Test 9.25 9.5
Pressure Relief Test 9 8.5
Spinal Alignment Test 9.5 9.5
Responsiveness Test 8 10
Cooling Evaluation 7.5 7
Durability Evaluation 8 8
Customer Service Score 10 9
Social Impact Score 5 9
TOTAL SCORE 8.9/10 9.1/10

Spine Alignment

Spine alignment is crucial no matter the position you sleep in. That’s because it’s a test of how well a mattress maintains a straight spine. Good spine alignment can not only prevent back pain, but promote a healthy posture.

The Casper and the Lull both earned scores of 9.5 on spine alignment, which means they’re phenomenal choices for anyone looking to relieve back pain. Side, stomach, and back sleepers would also appreciate these mattress’s outstanding spine alignment.

Trial Period

Trial period demonstrates how long you can try out the mattress before fully committing. Both the Casper and the Lull received high scores for this factor, because they both give 100 days to try out the mattress.

Edge Support

Edge support measures how secure a mattress’s borders are, so if you happen to get pushed by your partner to the edge of the bed, or you tie your shoes there each morning, you can do so without falling off, or experiencing any dipping or sinking.

Both the Lull and Casper performed well on edge support. They each received near-perfect scores.


Responsiveness details how much a mattress adapts to your movements and supports your body in various sleep positions.

The Casper earned a perfect score in this category, so combination sleepers– perk up! This means it’s super easy to switch positions on the Casper, and with the Zoned Support layer, you’ll feel comfortable no matter the position you land in. The Lull came up short in this category, only earning an 8 out of 10, which isn’t too shabby, but certainly doesn’t compare to Casper’s perfect score.

Verdict: Which Is the Best Mattress?

When comparing the Lull vs. Casper mattresses Casper beats out Lull with a score of 9.1/10 compared to 8.9/10. However, both mattresses check in with very similar price points and are widely recognized as two affordable mattresses

Casper earns top marks for their shipping, trial period, and warranty, which is identical to the Lull mattress. When it comes to edge support and responsiveness, Casper definitely beats out Lull. However, if you sleep with a partner and are seeking to achieve motion isolation, Lull is the choice for you.

Both the Casper mattress and the Lull mattress have great reputations and appeal to the needs of the average sleeper who is in search of a memory foam mattress and a good night’s rest.

Other Casper Comparisons:

Still Deciding?

Ready to compare other mattresses against each other? Use our comparison tool to see how two different mattress models compare.

Compare Other Mattresses

Related Content

Comments (0)