In this Amerisleep vs Casper comparison, we help you decide which mattress is the best for your sleep needs.
So you’re comparing the Casper and Amerisleep memory foam mattresses? Good choices. Both of these mattress models are all-foam beds made with high-quality materials and unique comfort technologies. But which is right for you? That’s what we’ll talk about in this mattress comparison.
Learn about how bed-in-a-box companies Casper and Amerisleep differ in this review.
Universal firmness mattress for the average sleeper
Medium firm: 6/10
10-year limited warranty
Memory foam mattress with cooling technology (part of Amerisleep's Soft Collection)
20-year limited warranty
Casper and Amerisleep have almost identical dimensions, but Amerisleep is 1” shorter, and Casper’s Twin and Twin XL beds are 1” longer. See for yourself in the chart below.
|Twin Size||39″ x 75″||38″ x 74″|
|Twin XL||39″ x 80″||38″ 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.
Casper is decidedly the more budget-friendly mattress. Compare both brands’ prices by size below.
We put both the Casper and Amerisleep AS3 mattresses through a comprehensive lab evaluation that tests 14 important criteria. The chart below shows how each mattress scored across all of the categories.
|Motion Transfer Test||8||8.75|
|Edge Support Test||9.5||8|
|Pressure Relief Test||8.5||7.75|
|Spinal Alignment Test||9.5||8.25|
|Customer Service Score||9||9|
|Social Impact Score||9||4|
Mattress firmness can make a huge impact on comfort. Fortunately, Casper and Amerisleep both have a medium-firm feel that works for all sleep positions.
Still, side sleepers will be more comfortable on the Casper. It scored higher in pressure relief and spinal alignment. Back and stomach sleepers could fare well on either bed, although Casper’s superior spinal alignment is a big plus if you have back pain.
Combo sleepers should go with Casper, since it scored a perfect 10/10 on our responsiveness assessment. Amerisleep only scored 7/10, which isn’t bad, but doesn’t compete with Casper’s perfect score.
You may pay more for the Amerisleep, but you are protected for longer. Amerisleep’s 20-year warranty is 2 times longer than Casper’s warranty. It also covers more nuanced defects. For example, Amerisleep will completely replace your mattress if it develops sagging deeper than 0.75”, while Casper covers 1” impressions.
Keep in mind that Amerisleep requires you to pay a prorated cost during the second 10 years of the warranty.
Both companies provide free shipping in the continental U.S. They also both offer 100-night sleep trials and full refunds during the trial period.
You may already have a good idea of which mattress is the right fit for your needs. Whichever mattress you choose, we’re confident you’ll experience a comfy night’s sleep. Each of these mattress models receive rave reviews from customers and neither scored below average on any of our evaluation criteria. Plus, if your new mattress is just not the right fit, you can return it during the 100-day trial period.
Interested in a Casper mattress but don't where to start? Check out our reviews of all 5 models to find which is best for you.