The Saatva Rx is a high-end innerspring mattress marketed as a responsive, pressure-relieving option for people with joint and back pain. It includes a comfort layer of micro coils as well as unusually designed support layer, with polyfoam cubes installed above each pocket coil.
This mattress has medium firmness overall, making it suitable for most side sleepers and lighter back and stomach sleepers. Lighter side sleepers may want something plusher for better pressure relief, while heavier back and stomach sleepers might want a firmer option for proper support. You sink deeply into the mattress's upper layers, but they don't contour your body closely, so you feel cradled but not hugged. It's moderately bouncy and extremely responsive, so it's easy to move around on and doesn't feel constricting.
Our Verdict
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Light Weight
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Average Weight
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Heavy Weight
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Sitting or sleeping on the edge is uncomfortable.
Too firm for average and lighter side sleepers.
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Light Weight
-
Average Weight
-
Heavy Weight
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Sitting or sleeping on the edge is uncomfortable.
Too firm for average and lighter side sleepers.
-
Light Weight
-
Average Weight
-
Heavy Weight
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Sitting or sleeping on the edge is uncomfortable.
Too firm for average and lighter side sleepers.
The Saatva Rx isn't very durable. Most of the foam in the mattress isn't dense enough to be considered good quality. The quilted top, upper comfort layer, and transition layer are made of lower-quality memory foam and polyfoam and are likely to form permanent indentations or start sagging sooner than higher-quality foams. That said, the foam cubes sewn onto the support springs are made of much more durable, high-quality polyfoam.
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Sitting or sleeping on the edge is uncomfortable.
Uses mostly low-density, less durable foam.
Too firm for average and lighter side sleepers.
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Sitting or sleeping on the edge is uncomfortable.
Too firm for average and lighter side sleepers.
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Sitting or sleeping on the edge is uncomfortable.
Too firm for average and lighter side sleepers.
The Saatva Rx has a good cooling performance. It dissipates enough heat to keep most people comfortable. However, it's only decent at dissipating heat when you first get into bed, so you may want to avoid it if you often have difficulty falling asleep because of overheating. It dissipates heat more efficiently overnight, so you're less likely to wake up hours later boiling hot.
Cooling enough for most people.
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Sitting or sleeping on the edge is uncomfortable.
Too firm for average and lighter side sleepers.
The Saatva Rx has decent motion dissipation. You won't feel every small move your partner makes, but you will feel bigger movements across the mattress. Motion also doesn't dissipate very quickly, especially at the head and foot of the mattress. You might feel like you're bouncing around for a moment after someone rolls over or a pet jumps on the bed, which makes movement more likely to wake you up.
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Decent motion isolation, but not ideal for sleeping with a partner.
Sitting or sleeping on the edge is uncomfortable.
Too firm for average and lighter side sleepers.
The Saatva Rx has incredible responsiveness. It recovers its shape extremely quickly after being compressed, so as you shift sleeping positions, it adapts to your body quickly, and you don't feel held in place.
Very responsive, so you don't feel stuck in place.
Good firmness for average and lighter back and stomach sleepers.
Suitable for heavier side sleepers.
Sitting or sleeping on the edge is uncomfortable.
Too firm for average and lighter side sleepers.
Performance Usages
Changelog
- Updated Mar 09, 2026: We converted this review to Our Verdict section to clearly show the suitability of a mattress for your weight and sleeping position.
- Updated Feb 12, 2026: We converted this review to Test Bench 1.1. We've added new tests, including Body Conformity, Support, and Comfort Layers Envelopment, and also added scoring to the Bounciness test. Our usage scores have also changed, with new usages 'Side Sleeping,' 'Back Sleeping,' and 'Stomach Sleeping' replacing the 'Sleeping' verdict. We've also added 'Pressure Relief' and 'Support' performance usages. You can find more details in the full changelog.
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Updated Oct 06, 2025:
We rewrote portions of this review to align with Test Bench 1.0.1, which adds a Longevity verdict and a score to the Foam Layer Mass Density box for users interested in the mattress's durability.
- Updated Oct 06, 2025: Converted this review to Test Bench 1.0.1. We've added scoring to the Foam Layer Mass Density section and a new 'Longevity' performance usage. Read more about it in our Changelog.
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Differences Between Sizes And Variants
The Saatva Rx comes in standard sizes: Twin, Twin XL, Full, Queen, King, California King, and Split California King. It's available in one firmness option, 'Supportive Plush', which corresponds with a medium plush mattress on Saatva's scale. We tested a Queen-sized model, and you can see our unit's label. Our results are only valid for that size.
If you have experience with the Saatva Rx or a variant, we invite you to share your experience in the comments.
Popular Mattress Comparisons
The Saatva Rx is an innerspring mattress with a medium firmness level. You sink deeply into it, but it contours your body less compared to most mattresses and is very responsive, so you don't feel hugged or constricted. However, it doesn't really stand out for its performance otherwise. Its motion isolation and cooling performances are just decent and similar to the Saatva Classic's, which also offers significantly better edge support. The Boring Mattress has the same medium firmness level and offers better cooling, motion isolation, and edge support, although its upper layers don't feel as pillowy. The Stearns & Foster Lux is also a good option with better cooling and motion isolation. It's more contouring and has a medium-plush firmness level, so it's better-suited for lighter side sleepers.
If you're looking for a recommendation, check out the best mattresses for side sleepers or our picks for the best mattresses overall.
You may prefer either the Casper Snow or the Saatva Rx. They have a similar medium firmness level, and both have high sinking, so you feel slightly enveloped by the mattress. The Casper utilizes memory foam for its comfort layers, which helps provide a more contouring feel and better motion isolation performance. It's also a much better choice for hot sleepers. The Saatva is much more responsive, however, so it's a better option if you don't like the slow-moving feel of memory foam.
The Tempur-Pedic TEMPUR-Adapt and the Saatva Rx are both medium mattresses suitable for most side sleepers, and you may prefer either depending on your preferences. The Tempur-Pedic is an all-foam mattress with memory foam, so it's highly contouring, but responds slowly and may make you feel constricted. That said, it stands out for its fantastic motion isolation, which is great if your partner's movements often wake you. The Saatva is very responsive and has low contouring, so you won't feel hugged or stuck in place.
The Beautyrest Black is a little better than the Saatva Rx. Both mattresses have a medium firmness level and are suitable for most side sleepers. They're moderately bouncy and very responsive, so it's easy to change sleeping positions. The Beautyrest has significantly better edge support, making it more comfortable to sit and sleep on the side of the mattress. It also offers better motion isolation. That said, the Saatva has better cooling. You sink deeper into it, so you might prefer it if you like feeling slightly enveloped by your mattress.
The Saatva Classic (double pocket-coil design) is a little better than the Saatva Rx. They perform quite similarly, but the Classic has much better edge support, so you can easily get in and out of bed or comfortably sleep near the edge. The Classic is a little bouncier, which gives it a springy feel and makes changing sleeping positions feel effortless. However, you sink more deeply into the Rx's upper layers, which you might prefer if you like the feeling of being 'in' your mattress versus 'on' it.
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