Amerisleep vs Lull Review: AS3 or Original Mattress?

Amerisleep vs Lull at a Glance

One mattress is 12 inches tall and the other is 10 inches tall. The AS3 is the taller option, while both models use foam-based construction rather than a traditional innerspring build in the versions compared here.

The table also shows the central split. Amerisleep leans into a medium profile and zoned support design. Lull leans into a somewhat firmer stated feel, memory foam materials, and an unusually long evaluation window.

Construction and Feel

Bio-Pur foam sits above HIVE zoned support in the AS3. Amerisleep identifies those two elements as defining parts of the mattress. Bio-Pur is the comfort-layer material named by the brand, while HIVE is the support system that divides support by zone instead of presenting the mattress as one uniform foam block.

That construction is meaningful for shoppers who do not want to choose between a soft surface and a completely firm, flat feel. A medium designation places the AS3 in the broad center of the firmness spectrum, which is often the practical starting point for combination sleepers or couples with slightly different preferences. It is still a personal preference, not a promise that every sleeper will experience the same firmness.

The standard all-foam AS3 is the version at issue here. Amerisleep also sells another construction type under the AS3 name, but that is not the mattress being compared in this article.

Lull calls the Original a balanced medium-firm, 10-inch memory-foam mattress. That language points the Lull Original toward shoppers who already know they prefer more resistance than a classic medium feel. Its listed materials include aerated open-cell memory foam, gel beads, and a high-resilience support-foam base.

Memory foam is the central material story with Lull. Buyers drawn to the close-conforming character commonly associated with memory foam may find that more appealing than Amerisleep’s Bio-Pur and zoning emphasis. Conversely, a shopper seeking a more centered medium feel may find the AS3’s description closer to the target.

Lull’s own Original page contains one detail worth clearing up: its summary describes three layers, while a detailed section describes five. I would not use either number as a deciding factor until Lull resolves that mismatch. The material types it names are more useful for comparing the two beds than an unsettled layer count.

Pressure Relief and Support

HIVE zoned support is the clearest support-specific feature between these two mattresses. Amerisleep names it as part of the AS3 construction, giving shoppers a concrete reason to consider this model if they want a design that varies support across different areas of the mattress.

That does not establish an outcome for a particular body type or sleeping position. Pressure relief and alignment depend on a person’s build, sleep posture, and sensitivity to firmness. What the construction does establish is that Amerisleep has designed the AS3 around a medium comfort profile with a zoned support element beneath it.

Lull takes a different route. Its Original uses an aerated open-cell memory-foam layer over a high-resilience support-foam base. That is a straightforward foam construction for a buyer who wants the familiar combination of a conforming upper foam and a firmer support layer below.

Neither brand provides a sleeper-weight range, firmness scale number, or position-by-position recommendation on the product details summarized here. I would not pretend those gaps can be solved with a universal answer. The better move is to use the stated feel as your first filter, then use the trial period to determine whether your body agrees.

Temperature, Motion, and Edge Expectations

Lull builds airflow language into its comfort foam. The Original includes aerated open-cell memory foam and gel beads, both details Lull highlights in its construction. Those are the only temperature-related features identified for Lull here.

Amerisleep identifies Bio-Pur foam in the AS3, but the AS3 details here do not provide a temperature-performance claim, cooling measurement, or comparative heat result. It would be a stretch to declare either mattress cooler based solely on the available descriptions.

Both beds are being considered as foam mattresses, and neither product page detail summarized here gives a quantified motion-isolation or edge-support result. Foam construction may be relevant to shoppers considering movement from a partner, but no specific performance conclusion is supported for either model.

This is one area where personal priorities matter more than marketing shorthand. If you sleep unusually warm, need unusually strong perimeter support, or are highly sensitive to movement, seek clarification directly from the brand before purchasing. The listed materials alone do not settle those questions.

Trial, Warranty, and Practical Value

Lull offers the longer try-at-home window by a wide margin: 365 nights versus 100 nights. Lull pairs that 365-night trial with a lifetime warranty. For a cautious buyer, the extended period may be the single most compelling reason to choose the Original.

Amerisleep provides a 100-night trial and a 20-year warranty for the AS3. Amerisleep also says shipping and returns are free under its published terms. A 100-night trial is still enough time for many buyers to judge a new mattress through an extended adjustment period, but it is plainly shorter than Lull’s offering.

Warranty duration should not be treated as a simple scorecard. Coverage terms, exclusions, and eligibility conditions matter, so read each brand’s current policy before ordering. The direct comparison is clear, though: Lull lists lifetime coverage, and Amerisleep lists 20 years.

Both brands connect their products to US assembly or manufacturing with domestic and imported components. Amerisleep says the AS3 is made in the USA with domestic and imported parts. Lull says the Original is assembled in the USA with domestic and imported materials. Those are similar broad origin descriptions, but they are not identical wording.

Why the Amerisleep AS3 Wins Overall

The AS3 wins because its four most useful distinctions work together rather than standing alone. Amerisleep positions it as a medium-feel mattress, names HIVE zoned support in its construction, says it is fiberglass-free, and backs it with a 20-year warranty. For the broadest range of shoppers, that is a more balanced set of decision points than choosing solely around a firmer feel or a longer trial.

The medium designation is especially important. It avoids assuming that every buyer wants a more resistant medium-firm surface, while the zoning gives the support story a specific construction basis. The fiberglass-free claim also provides a clear materials consideration for shoppers who place that feature high on their checklist.

Lull remains a credible alternative, not a weak one. Its 365-night trial and lifetime warranty are substantial advantages, and its balanced medium-firm feel may be exactly right for a shopper who has already ruled out a medium mattress. Its high-resilience support foam also gives the mattress a clear foundational component.

The deciding issue is fit. The Lull Original makes most sense where its longer trial and medium-firm description are central requirements. The AS3 is the better overall pick where a medium feel, named zoned support, fiberglass-free construction, and a long but finite warranty create the more useful all-around package.

Who Should Buy Each Mattress?

The right choice depends first on whether you want medium or medium-firm. That is more actionable than trying to infer a winner from mattress height alone.

Buyers looking for more detail on each model can read our Amerisleep AS3 review and Lull mattress review. Those pages are useful next reads when you have already narrowed the decision to these exact two options.

Pros and Cons

The clearest AS3 advantage is the specificity of its support and materials story. Its most relevant strengths and tradeoffs are straightforward.

Lull’s policy duration is its most persuasive counterpoint. The Original also has meaningful strengths for the right shopper.

Amerisleep vs Lull FAQs

Which mattress wins, Amerisleep AS3 or Lull Original?

The Amerisleep AS3 wins overall. Its medium feel, HIVE zoned support, fiberglass-free construction, and 20-year warranty make it the more rounded choice for most buyers. Lull is the better alternative for shoppers focused on its 365-night trial and balanced medium-firm feel.

Is the Amerisleep AS3 softer than the Lull Original?

Amerisleep describes the AS3 as medium, while Lull describes the Original as balanced medium-firm. Those labels suggest the AS3 is the less firm of the two on paper, though individual comfort perception can vary.

Does either mattress use fiberglass?

Amerisleep says the AS3 is fiberglass-free. The Lull Original page referenced here does not address fiberglass, so no comparison beyond that can be made.

Which mattress has the better sleep trial?

Lull offers the longer trial at 365 nights. Amerisleep offers 100 nights for the AS3. Buyers who want maximum time at home before deciding have a clear policy advantage with Lull.

Are both mattresses made in the USA?

Amerisleep says the AS3 is made in the USA with domestic and imported parts. Lull says the Original is assembled in the USA with domestic and imported materials.

Final Verdict

Choose the Amerisleep AS3 for the better all-around construction and policy balance. Its medium feel, HIVE zoned support, fiberglass-free construction, and 20-year warranty support its overall-win verdict without requiring a shopper to commit to a firmer feel.

Choose the Lull Original Mattress if its balanced medium-firm feel is closer to what you want and the 365-night trial is your deciding factor. Lull’s lifetime warranty adds another real policy advantage. For most shoppers weighing these two exact mattresses, though, the AS3 is the more complete pick.

For a broader look at the brand’s current lineup context, see our Amerisleep mattress reviews.