Amerisleep AS3 vs Saatva Zenhaven: Foam Feel or Flippable Latex

The all-foam Amerisleep AS3 and the Saatva Zenhaven are two luxury mattresses built in completely different ways. The AS3 is a medium-feel foam bed with a cooling cover and plant-based memory foam, sold with a 100-night trial and a 20-year warranty. The Zenhaven is a flippable natural latex mattress with two distinct firmness sides, sold with a 365-night home trial and a lifetime warranty. This comparison walks through feel, materials, cooling, policies and price so you can decide which one fits your sleep.

Our pick

Saatva Zenhaventhe latex pick in this face-to-face

• Dual-sided design with two firmness levels
• GOLS-certified latex with organic cotton and New Zealand wool
• 365-night home trial
• Lifetime warranty and free white-glove delivery

Check today’s Saatva price →

Which mattress should you choose between the Amerisleep AS3 and the Saatva Zenhaven?

You should choose the Amerisleep AS3 all-foam if you want a medium-feel memory foam bed with a cooling cover and a fiberglass-free build, and you are comfortable with a 100-night trial. You should choose the Saatva Zenhaven if you want natural latex, a flippable design with two firmness levels in one mattress, and a 365-night home trial backed by a lifetime warranty. The AS3 gives you one consistent feel; the Zenhaven lets you pick which of its two faces you sleep on, though both partners sleep on the same face at any given time.

Who is each mattress for?

The AS3 is aimed at sleepers who want balanced comfort and support across all sleeping styles. Amerisleep describes it as offering balanced comfort and support perfect for all sleeping styles, with HIVE technology for targeted support and airflow. It is fiberglass-free, non-toxic, and made in the USA. The Zenhaven is aimed at sleepers who prefer a buoyant latex feel and want firmness choice built into the mattress itself. Its Luxury Plush side suits side, back and combination sleepers, while its Gentle Firm side suits stomach sleepers and anyone who prefers a firmer surface.

If you move between positions at night, the AS3’s single medium feel is designed to work across styles without adjustment. If you know you want to change firmness without buying a second mattress, the Zenhaven’s flippable design is the direct answer. For shoppers still weighing foam against other materials, our best memory foam mattresses and best latex mattresses roundups cover both categories in depth.

Side-by-side specifications

How do the two mattresses feel and support you?

The AS3 has a single medium feel with a 12-inch profile. Amerisleep describes it as delivering balanced comfort and support perfect for all sleeping styles, with HIVE technology designed to maximize airflow and provide targeted support. The surface uses plant-based Bio-Pur memory foam, which the brand says snaps back to its original shape in seconds so you do not sink uncomfortably, and its open-cell design lets more air circulate than traditional foam.

The Zenhaven offers two feels in one mattress. The Luxury Plush side is rated 4-5 out of 10 and is described as soft yet weightless and buoyant, with body contouring to relieve pressure points at the hips and shoulders. The Gentle Firm side is rated 7-8 out of 10, which is 18 percent firmer than the Luxury Plush side, and it offers more push-back support and responsiveness. A 5-zone latex layer provides ergonomic support with enhanced lumbar support in any sleep position.

The practical difference: with the AS3 you get one feel that the brand positions as suitable for all styles. With the Zenhaven you choose which face to sleep on, and that choice applies to the whole mattress. Partners should agree on the face they use, since flipping changes firmness for both sides of the bed at once.

What materials is each mattress made from?

The AS3 uses plant-based Bio-Pur memory foam, which Amerisleep describes as an eco-friendly alternative that blends contouring comfort with buoyant support and superior breathability. The brand states that Bio-Pur contains a fraction of the petrochemicals used in other memory foams and is less likely to off-gas. The mattress is fiberglass-free, non-toxic, and made in the USA. HIVE technology is built in for targeted support and airflow.

The Zenhaven is built with Global Organic Latex Standard certified latex foam. Its cover is a soft, breathable blend that includes organic cotton, and it uses premium New Zealand wool certified for low VOCs and total chemical emissions. The all-foam construction is designed to minimize dust mite allergens for a more hypoallergenic sleep environment. An antimicrobial treatment inhibits the growth of bacteria, mold and mildew.

If organic certifications are a priority for you, our best organic mattresses guide covers the wider category.

Which mattress sleeps cooler?

The AS3 is built around cooling from the cover down. Amerisleep’s Refresh Cooling Technology cover is made from a fiber with high energy transfer capabilities that draws heat from your skin, and the brand states that on average the sleeping surface stays 7 degrees cooler over an eight-hour night. The plant-based Bio-Pur material has an open-cell design that allows more air to circulate than traditional foam, which the brand links to cooler sleep and less sweating.

The Zenhaven approaches cooling through natural materials. Natural latex is described as highly breathable, and organic New Zealand wool helps regulate body temperature. Saatva describes the cover as a naturally breathable, hypoallergenic blend with organic cotton designed for cooler sleep. Vented airflow channels in the 5-zone latex layer allow better circulation throughout the mattress.

Both mattresses address heat, one through engineered cooling fibers and open-cell foam, the other through breathable latex and wool. If you sleep hot and want to see how other foam beds handle it, our best hybrid mattresses page covers coil-and-foam builds as well.

What do trial, warranty and delivery look like?

The AS3 comes with a 100-night sleep trial, a 20-year warranty, and free shipping and returns. The mattress is made in the USA. The Zenhaven comes with a 365-night home trial and a lifetime warranty that covers defects in workmanship and materials for as long as the original purchaser owns it. Saatva’s white-glove delivery includes in-room delivery and setup, and the old mattress can be taken away at no additional cost when you check the removal option at checkout.

The trial difference is substantial: 100 nights versus 365 nights. The warranty difference is also clear, with 20 years on the AS3 and a lifetime warranty on the Zenhaven. Delivery differs in kind as well, with standard shipping and returns on the AS3 and in-person setup on the Zenhaven.

How do the prices compare?

The Amerisleep AS3 all-foam version is listed at Queen: $1,149 with a list price of $1,749, and prices change with promotions.

Value here is better judged on what you get for your money: the AS3 pairs a 100-night trial with a 20-year warranty and a cooling cover, while the Zenhaven pairs a 365-night trial with a lifetime warranty, white-glove delivery, and a flippable two-firmness design in certified latex.

Who should not pick each mattress?

Skip the AS3 if you specifically want natural latex, a flippable design, or a trial longer than 100 nights. The AS3 is a single-feel foam mattress, so it will not give you a firmer option to flip to. Skip the Zenhaven if you want a traditional memory foam feel with a cooling cover, or if you prefer a mattress that ships with standard shipping rather than scheduled in-home delivery. The Zenhaven’s two firmness levels apply to the whole mattress, so couples should be comfortable agreeing on one face rather than each choosing a different side.

What is the Saatva alternative in this comparison?

For shoppers who want an innerspring feel instead of foam or latex, the Saatva Classic is the alternative worth knowing. It comes with a 365-night home trial, free white-glove delivery including in-room setup and old mattress removal, and a lifetime warranty. It is available in three comfort levels: Plush Soft (3/10), Luxury Firm (5-7/10), and Firm (8/10), with a 3-inch Euro pillow top and patented Lumbar Zone technology. It is offered in two heights, 11.5 inches and 14.5 inches. If your decision between the AS3 and the Zenhaven came down to wanting a coil feel, the Classic covers that ground. Full details are in our Saatva Classic review.

World Sleep Almanac score: 8.2/10

The World Sleep Almanac editorial score is built from five criteria, each rated on the facts published by the brands: price at equal size, trial and returns, warranty, materials and construction, and public customer reputation. The AS3 scores well on materials and a clear list price; the Zenhaven scores well on trial length, warranty and certified materials. Together, as a comparison page, the pairing earns 8.2 out of 10.

• Price at equal size: the AS3 publishes a clear queen list price; the Zenhaven price is not stated here.
• Trial and returns: 100 nights on the AS3, 365 nights on the Zenhaven.
• Warranty: 20 years on the AS3, lifetime on the Zenhaven.
• Materials and construction: fiberglass-free plant-based foam versus GOLS-certified latex with organic cotton and New Zealand wool.
• Public customer reputation:Amerisleep reports 15,000 plus reviews averaging 4.7 stars and a Newsweek Readers’ Choice Best Mattress 2026 award for the AS3.

Verdict: Pick the Amerisleep AS3 all-foam if you want a medium memory foam feel with a cooling cover, a fiberglass-free build, and a straightforward 100-night trial backed by 20 years of warranty. Pick the Saatva Zenhaven if you want natural latex, two firmness levels in one flippable mattress, a 365-night trial, a lifetime warranty, and in-home delivery with setup. The AS3 is the simpler, single-feel choice; the Zenhaven is the longer-commitment, more adjustable choice.

Frequently asked questions

Can I change the firmness of either mattress after buying?

The Zenhaven is flippable, so you can choose between its Luxury Plush side and its Gentle Firm side at any time. The AS3 has one medium feel and does not flip. Note that flipping the Zenhaven changes firmness for the whole mattress, so both partners sleep on the same face.

Which mattress is better for stomach sleepers?

The Zenhaven’s Gentle Firm side, rated 7-8 out of 10, is described as best suited for stomach sleepers and also great for back sleepers. The AS3 is a single medium feel positioned for all sleeping styles.

Does either mattress come with a fiberglass layer?

The Amerisleep AS3 is described as fiberglass-free, eco-friendly and non-toxic. The Zenhaven’s construction is described as all-foam latex with an organic cotton blend cover and New Zealand wool, with no fiberglass mentioned.

How long can I try each mattress at home?

The AS3 comes with a 100-night sleep trial. The Zenhaven comes with a 365-night home trial.

Which mattress is delivered with setup?

The Zenhaven ships with free white-glove delivery that includes in-room delivery and setup, and old mattress removal is available at no extra cost. The AS3 ships with free shipping and returns.

Reviewed by the World Sleep Almanac editorial team. Updated October 2026.