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

Casper Mattress Review Highlights

  • This is the original Casper mattress and their most popular model.
  • The Casper is one of the best known foam beds and is recognized for truly appealing to average sleepers. 
  • 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.
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
  • The Lull online mattress scores well in offering spine alignment to a sleeper.
  • 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 mimic each other in thickness.

Thickness 10″ 10″
Twin Size 38″ x 75″ 39″ x 75″
Twin XL 38″ x 80″ 39″ x 80″
Full Size 54″ x 75″ 54″ 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 King and California King over Lull.

Twin $649 $595
Twin XL $699 $645
Full $849 $895
Queen $949 $995
King $1149 $1,195
Cal King $1149 $1,195

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.

Inside Casper Original

Inside the Casper Mattress

Comprised of four 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. 

  • Top Layer: Made up of gel memory foam, this layer promotes relief of pressure points and seeks to minimize heat retention
  • Second 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. 
  • 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


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.

Still Deciding?

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

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