Saatva Rx vs Zenhaven: Rx for Back Conditions, Zenhaven for Latex

Two Saatva mattresses sit at the top of the brand’s foam-and-coil range, and they solve different problems. The Saatva Rx is built around a Therapeutic Support Core and Lumbar Zone quilting, aimed at sleepers dealing with serious chronic back and joint conditions. The Saatva Zenhaven is a flippable natural latex mattress with two distinct firmness sides, aimed at sleepers who want a buoyant, breathable all-foam feel. If you live with conditions like sciatica, arthritis, herniated disc or scoliosis, the Saatva Rx is the one the brand designs for. If you want two firmness options in one bed and a natural latex build, the Saatva Zenhaven is the better match.

Our pick

Saatva Rx for sleepers with chronic back and joint conditions

• Therapeutic Support Core with micro-coils and graphite-infused foam
• Patented Lumbar Zone quilting with gel-infused memory foam
• 365-night home trial and lifetime warranty
• Endorsed by the American Chiropractic Association

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Which Saatva should you buy, the Rx or the Zenhaven?

You should buy the Saatva Rx if you want a Supportive Plush feel rated 3-4 out of 10 on Saatva’s scale, where 1 is softest and 10 firmest, and you want a mattress built around back and joint support. You should buy the Saatva Zenhaven if you want natural latex and a flippable design with a Luxury Plush side at 4-5 out of 10 and a Gentle Firm side at 7-8 out of 10. The choice comes down to condition-specific support versus dual-sided latex.

The Saatva Rx uses a Therapeutic Support Core combining a proprietary graphite and phase-change material foam with a triple-tempered micro-coil layer, all encased in high density foam for edge support. The Saatva Zenhaven uses a 5-zone natural latex layer with vented airflow channels, and it is flippable so you can change the firmness by turning it over. Both are made to order and assembled in the U.S.

How do the Saatva Rx and Saatva Zenhaven feel?

The Saatva Rx has a Supportive Plush feel that Saatva rates at 3-4 out of 10 on its own firmness scale, where 1 is softest and 10 firmest. The Saatva Zenhaven has two feels in one mattress: Luxury Plush at 4-5 out of 10 and Gentle Firm at 7-8 out of 10, with the firm side described as 18 percent firmer than the plush side. One is a single plush feel, the other is a choice you can flip.

Saatva describes the Rx as body-contouring and responsive, cradling the body to relieve pressure points while the Lumbar Zone quilting adds lower back support. The Zenhaven’s Luxury Plush side is described as soft yet weightless and buoyant, with more body contouring than the firm side to relieve pressure on hips and shoulders. The Gentle Firm side offers more push back support and responsiveness, described as a true firm that is never hard on the back and joints.

What are the Saatva Rx and Saatva Zenhaven made of?

The Saatva Rx is built around the Therapeutic Support Core, which pairs a proprietary foam infused with graphite and phase-change material with a layer of triple-tempered recycled steel micro-coils. Above that sits patented Lumbar Zone quilting with gel-infused memory foam, and the coil layer is fully encased in high density foam for edge support and mobility. The cover is organic cotton, and the foams are CertiPUR-US certified.

The Saatva Zenhaven is an all-foam latex mattress with a 5-zone natural latex layer and vented airflow channels. The latex is the cover includes organic cotton, and the New Zealand wool is certified organic. Saatva states the Zenhaven uses no petroleum-based foams and is Gold certified for low VOCs and total chemical emissions, with no chemical flame retardants. The latex is washed to remove allergy-causing proteins.

Which mattress sleeps cooler, the Saatva Rx or the Saatva Zenhaven?

Saatva describes the Zenhaven as offering excellent cooling, citing naturally breathable latex, vented airflow channels, an organic cotton cover and New Zealand wool that helps regulate body temperature. The Saatva Rx is described as breathable, with an organic cotton cover, breathable foams and a dual-coil design that allows airflow to disperse body heat, plus graphite and phase-change material in the core foam to help regulate body temperature. Both are built for airflow, through different routes.

If you sleep hot and want a natural latex build with vented channels, the Zenhaven is the one Saatva positions around cooling. If you want cooling features combined with the support-focused core of the Rx, that mattress carries the graphite and PCM foam along with its dual-coil design. Neither mattress is described by Saatva as a cooling specialist above the other; the brand lists cooling among the Zenhaven’s headline features and breathability among the Rx’s.

What do the Saatva Rx and Saatva Zenhaven cost?

Saatva lists the Saatva Rx at $3,639 and the Saatva Zenhaven at $3,699 as their regular prices, before any sale. The brand runs frequent sales, so check today’s price before you buy. Both mattresses are offered in Twin, Twin XL, Full, Queen, King, Split King and Cal King, and the Zenhaven also lists an Upper-Flex King.

The two sit within a few hundred dollars of each other at list price, so price is unlikely to be the deciding factor between them. The decision is better made on feel, materials and which sleeper profile each mattress is designed for. Both are made to order and assembled in the U.S. with globally sourced materials.

Who should buy the Saatva Rx?

You should buy the Saatva Rx if you deal with serious, chronic back and joint conditions such as sciatica, arthritis, herniated disc or scoliosis, and you want a Supportive Plush mattress rated 3-4 out of 10 on Saatva’s scale. The Saatva Rx is also suited to side sleepers, back sleepers and combination sleepers, plus stomach sleepers under 130 pounds. Saatva built the Rx around its Therapeutic Support Core and Lumbar Zone quilting specifically for this profile.

The Rx is the choice when you want one feel and a support-focused construction rather than a flippable design. Its micro-coil and graphite foam core, gel memory foam lumbar crown and high density foam edge encasement all point in one direction: contouring with lower back support. If your priority is a single, plush, supportive feel and you are not looking to change firmness later, the Rx is the simpler decision. It is also the model Saatva endorses through the American Chiropractic Association.

Who should buy the Saatva Zenhaven?

You should buy the Saatva Zenhaven if you want natural latex, a flippable mattress and a choice between a Luxury Plush side at 4-5 out of 10 and a Gentle Firm side at 7-8 out of 10 on Saatva’s scale, where 1 is softest and 10 firmest. The Zenhaven suits side sleepers, back sleepers and combination sleepers on the plush side, and stomach sleepers or firm-mattress sleepers on the gentle firm side. Saatva also positions it for couples who cannot agree on firmness.

Its 5-zone layout gives enhanced support in the center third of the mattress, and the vented airflow channels are there for breathability. If you want the option to change your mattress’s firmness by flipping it rather than committing to one feel, the Zenhaven gives you that in a single purchase.

How do trial, delivery and warranty compare?

Both the Saatva Rx and the Saatva Zenhaven come with Saatva’s 365-night home trial, free white-glove delivery with in-room setup, free removal of your old mattress, and a lifetime warranty for the original purchaser. These are brand-wide terms, so choosing between the two does not change your trial length, delivery service or warranty coverage. The decision stays with feel and materials.

White-glove delivery is the Saatva service standard and comes free with every mattress order. If you return a mattress within the 365-night home trial, Saatva issues a refund of the purchase price. The lifetime warranty covers defects in workmanship and materials under normal residential care and use for as long as the original purchaser owns the mattress.

Who should not buy either mattress?

Skip the Saatva Rx if you want a firm sleeping surface, since it comes in a single Supportive Plush feel rated 3-4 out of 10 and offers no firmer side to flip to. Skip the Saatva Zenhaven if you specifically want the Therapeutic Support Core and micro-coil construction of the Rx, because the Zenhaven is an all-foam latex mattress with no coils. If you want three comfort levels to choose from at purchase rather than two sides to flip, neither of these two is built that way.

Also note that stomach sleepers over 130 pounds are not named as an ideal match for the Rx, and the Zenhaven’s plush side is aimed at side and back sleepers rather than stomach sleepers. If you need a different construction entirely, our best latex mattresses and best hybrid mattresses roundups cover other builds, and our best organic mattresses list organic-focused options.

What is the Saatva alternative if neither fits?

The Saatva Classic is the brand’s alternative when neither the Rx nor the Zenhaven matches your profile. It comes in three comfort levels: Plush Soft at 3 out of 10, Luxury Firm at 5-7 out of 10 and Firm at 8 out of 10, with a 3-inch Euro pillow top and a dual-coil design of over 1,000 recycled carbon steel coils in full size and up. It is listed at $2,229, and Saatva recommends it for normal aches and pains rather than the serious chronic conditions the Rx targets.

The Classic is also the option if you want to pick your firmness at checkout instead of flipping a mattress, or if you want a coil-and-pillow-top construction at a lower list price than either the Rx or the Zenhaven. It shares the same 365-night home trial, white-glove delivery and lifetime warranty as the two mattresses compared here. For more foam-based options, see our best memory foam mattresses guide.

A strong alternative

Saatva Classic three comfort levels in one model

• Plush Soft (3/10), Luxury Firm (5-7/10) and Firm (8/10)
• 3-inch Euro pillow top and dual-coil design
• 365-night home trial and lifetime warranty
• Listed at $2,229

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World Sleep Almanac score: 8.0/10

The World Sleep Almanac editorial score for this head-to-head is 8.0 out of 10, based on the following criteria:

• Trial and returns: 8.5/10. Both carry a 365-night home trial with a refund of the purchase price on return.
• Warranty: 8.5/10. Both are covered by a lifetime warranty for the original purchaser against defects in workmanship and materials.
• Delivery: 9/10. Free white-glove delivery with in-room setup and free old mattress removal on both.
• Price: 6.5/10. Both sit in the brand’s higher price tier, with the Rx listed at $3,639 and the Zenhaven at $3,699.

The score is an editorial rating from the World Sleep Almanac team, averaged across these criteria.

FAQ

Does the Saatva Rx come in more than one firmness?

No. The Saatva Rx comes in a single Supportive Plush feel, which Saatva rates at 3-4 out of 10 on its firmness scale, where 1 is softest and 10 firmest. If you want more than one firmness option, the flippable Saatva Zenhaven gives you two sides, and the Saatva Classic offers three comfort levels to choose from at purchase.

Is the Saatva Zenhaven a hybrid mattress?

No. The Saatva Zenhaven is an all-foam natural latex mattress with a 5-zone latex layer and vented airflow channels. It contains no coils, unlike the Saatva Rx, which pairs its graphite and phase-change foam with a triple-tempered micro-coil layer inside the Therapeutic Support Core.

Can stomach sleepers use both mattresses?

Stomach sleepers under 130 pounds are named as a match for the Saatva Rx. On the Saatva Zenhaven, the Gentle Firm side at 7-8 out of 10 is the side Saatva recommends for stomach sleepers, while the Luxury Plush side at 4-5 out of 10 is aimed at side and back sleepers.

Do both mattresses come with the same trial and warranty?

Yes. Both the Saatva Rx and the Saatva Zenhaven come with Saatva’s 365-night home trial and lifetime warranty for the original purchaser, along with free white-glove delivery and old mattress removal. Choosing between the two does not change any of these terms.

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