Saatva Solaire vs Sleep Number i8: Mattress Comparison

Adjustable-air mattresses let you change firmness without replacing the bed. The Saatva Solaire and the earlier Sleep Number i8 take different approaches: one centers on manual adjustment and layered materials, while the other adds connected features.

Model availability: Sleep Number’s support pages identify the i8 within its earlier 360 and smart-bed generations; the current collection includes ComfortMode and ComfortNext. An older i8 listing may be a clearance, floor model or previously owned product. Confirm its condition, generation, warranty eligibility and whether any trial applies before buying. See our current Sleep Number comparison.

Solaire vs Sleep Number i8 at a glance

Saatva Solaire: construction and adjustment

Solaire uses air chambers to vary support beneath a quilted pillow top and layers of latex and memory foam. Saatva lists 50 settings and separate side adjustments in queen and larger sizes. The upper layers remain the same as the air support changes, so an adjustable setting does not turn the mattress into every possible feel.

Latex adds a responsive element while memory foam contributes contouring. Whether the surface feels too firm, too plush or warm is personal; compare settings in your usual sleeping position rather than choosing a setting from someone else’s weight chart. Motion isolation and edge feel can vary with the setting and the sleeper.

Firmness adjustment is different from elevating the head or feet. An adjustable base is a separate purchase. Saatva describes Upper-Flex as a single mattress split at the head for independent head positioning on a compatible base; a split king uses two twin XL mattresses and can allow independent head and foot positions with the appropriate base.

Sleep Number i8: automatic response and tracking

The i8 appeared in earlier Sleep Number smart-bed lines. Sleep Number’s 360 smart-bed guide describes dual adjustment, Responsive Air and SleepIQ tracking for supported 360 models, including the i8. Features and controls can differ by generation. Sleep tracking is an estimate of trends, not a diagnosis.

Check whether the air pump, hoses, remote or app, power supply and compatible base are included and working. For some 360 beds, connected smart features depend on connectivity. Ask the seller which generation you are buying and confirm ongoing app and parts support with Sleep Number.

Feel, fit and practical trade-offs

• Couples: Separate air settings can help partners explore different firmness preferences, but the comfort layers and shared surface still influence how the bed feels.
• Side sleepers: Look for enough cushioning at the shoulder and hip without feeling unsupported. Lighter and heavier sleepers may prefer different settings.
• Back and stomach sleepers: Try settings that feel supportive through the middle without creating uncomfortable pressure. There is no universally correct number.
• Cooling and movement: An open construction or cooling material does not guarantee a cool night. Consider room temperature, bedding and your own preferences; adjustability is not a substitute for testing the surface.
• Ownership: Air beds have pumps and hoses as well as foam and fabric. Ask about noise, access to components, service, moving the bed and future repair costs.

Trial, delivery and warranty

Saatva direct: Its published trial offers 365 nights on mattresses, with a $99 processing fee for a return or exchange and no mandatory minimum trial period. Adjustable bases are excluded. The Solaire product page describes in-room delivery and setup, with old mattress removal available when selected at checkout. A third-party retailer’s terms can differ.

Solaire warranty: Saatva’s Solaire warranty page describes lifetime limited coverage for the original purchaser, including no-cost repair for a covered defect during the first three years and a changing share of parts and service costs afterward. Its product page also describes five years of full parts coverage. Because the published descriptions conflict, ask Saatva to confirm the warranty document and component costs that apply to your order in writing. Check the support requirements and exclusions as well.

Sleep Number: Its current return page describes a 100-night trial and a one-time exchange for eligible purchases, with exclusions including adjustable bases and display products. An exchanged item is final sale under that policy. An older i8 from a reseller or a floor model may not carry the same trial or warranty; confirm eligibility, pickup and any fees with the actual seller.

Compare the total installed cost: mattress size, compatible base, delivery, removal, remote or accessories, return charges and possible service costs. A comfort trial and a defect warranty cover different problems.

Which should you choose?

• Choose Solaire if you want manually adjustable firmness, prefer its pillow-top and latex/foam construction, and are comfortable with the current direct price and warranty terms.
• Consider an i8 or a current Sleep Number model if you value Responsive Air and sleep-trend features. Verify the features of the actual model and its connection requirements.
• Consider a conventional mattress if you prefer a simpler bed without pumps, hoses or connected features.

Frequently asked questions

Are the Solaire and i8 still current models?

Saatva currently lists the Solaire. Sleep Number identifies i8 beds in earlier smart-bed generations and sells newer collections; verify the status and condition of any i8 listing.

Can both partners choose different firmness settings?

Saatva says queen and larger Solaire sizes have separate settings. Sleep Number describes dual adjustment on its 360 smart beds; confirm the size and version of an i8 listing.

Does an adjustable-air mattress also raise the head?

Not by itself. Raising the head or feet requires a compatible adjustable base, which is usually purchased separately. Check whether a split-head or split-king setup fits your needs.

Is the Solaire return free?

Saatva’s current direct mattress trial charges a $99 processing fee for a return or exchange. Adjustable bases are excluded; other sellers may have different terms.

Can an air mattress diagnose a sleep disorder?

No. A consumer sleep-tracking feature may provide estimates and trends but does not replace a clinical evaluation.

Related reading: Sleep Number models compared, Sleep Number 360 guide and ComfortNext review.

Manufacturer information checked October 2026. Promotions, model availability and seller policies may change. Some links may earn Yawnder a commission.