Quick Answer: Sleep Number’s adjustable base lineup is the FlexFit series — FlexFit 1 ($999 queen, basic articulation), FlexFit 2 ($1,499, adds Partner Snore + foot warming + lighting), and FlexFit 3 ($1,999, adds massage + auto-snore detection). All three carry a tiered 2-5-25 warranty (2 years full, 5 years limited, 25 years frame-only) and, per Sleep Number’s own return policy, are excluded from the 100-night trial that covers the mattress — the base purchase is final once delivered.
Sleep Number is one of the most-searched adjustable base names in the country, built around its SleepIQ smart mattresses — but the base itself is a separate purchase with its own pricing, warranty, and return rules that don’t always get the same attention as the mattress. Here’s what each FlexFit tier actually includes, and the two things Sleep Number’s own fine print says that its marketing doesn’t lead with.
FlexFit 1, 2, and 3 compared
| Spec | FlexFit 1 | FlexFit 2 | FlexFit 3 |
|---|---|---|---|
| Price (Queen) | $999 | $1,499 | $1,999 |
| Head/Foot Articulation | Yes | Yes | Yes |
| Zero-Gravity Preset | Yes | Yes | Yes |
| Partner Snore (one-side lift) | — | Yes | Yes, auto-detected |
| Foot Warming | — | Yes | Yes |
| Under-Bed Lighting | — | Yes | Yes |
| Massage | — | — | Yes |
| Warranty | 2-yr full / 5-yr limited / 25-yr frame-only (motors & electronics excluded after yr 2) | ||
Sleep Number FlexFit 2
- The "sweet spot" tier per Sleep Number's own lineup positioning — adds Partner Snore (lifting just one side to ease a snoring partner without waking them fully) and foot warming over the base FlexFit 1, without paying for FlexFit 3's massage motors.
- Wireless remote with one-touch favorite-position saves and a Zero-Gravity preset, standard across all three tiers.
- Compatible with adjustable-bed-suitable mattresses beyond Sleep Number's own lineup, since the base hardware is licensed L&P equipment, not a proprietary Sleep Number mechanism — worth confirming compatibility directly with a mattress's own base requirements before buying.
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The 100-night trial doesn’t cover the base
Sleep Number’s headline 100-night sleep trial is one of its best-known selling points — but per Sleep Number’s own return policy, that trial applies to the mattress only. The FlexFit base is treated as a separate, final-sale item: once it’s delivered, it isn’t eligible for return, even if the mattress it’s paired with turns out to be a bad fit and gets sent back within the trial window. Shoppers bundling a mattress and base at checkout should budget for the base as a committed purchase, not a trial-backed one — a distinction this site hasn’t found clearly stated on any other brand reviewed here, since most competitors either offer no formal trial at all or don’t carve the base out of it.
Sleep Number doesn’t build its own base — Leggett & Platt does
Per Sleep Number’s own warranty documentation, FlexFit bases are “warrantied by Leggett & Platt to the original purchaser” — the same manufacturer behind this site’s dedicated Leggett & Platt review. Sleep Number brands and sells the hardware, but doesn’t build it in-house, a pattern this site has now confirmed on multiple brand reviews (Serta’s bases are built by Ergomotion; Sleep Number’s are built by L&P). It doesn’t make the FlexFit a worse product, but it does mean the tiered 2-5-25 warranty — full coverage for 2 years, limited parts coverage for 5, and a 25-year tail that excludes “electronics, electrical components, drive motors and massage motors” per that same documentation — follows the same fine-print shape found across L&P’s other private-labeled bases.
Who should buy it
- Sleep Number mattress owners get a base built to spec for their SleepIQ mattress, with Partner Snore and foot warming (FlexFit 2+) tuned around the smart-bed ecosystem.
- Couples where one partner snores get real value from FlexFit 2 or 3’s Partner Snore feature — a distinct use case from the independent-side control covered in this site’s split-king vs. king guide, since Partner Snore lifts one side automatically rather than requiring manual independent control.
- Anyone buying mattress and base together for the trial period should confirm in writing that only the mattress is returnable — the base commitment is real from day one.
- Budget shoppers who don’t need Sleep Number’s ecosystem may find better per-dollar value on this site’s Sven & Son vs. Lucid comparison or the Leggett & Platt review, which offer comparable articulation at a lower entry price.
The bottom line
The FlexFit lineup is a solid, L&P-built adjustable base sold under the Sleep Number name, with FlexFit 2 hitting the best balance of features (Partner Snore, foot warming) for most queen-size buyers at $1,499. The tiered 2-5-25 warranty is in line with what this site has found on other L&P-manufactured bases — full coverage doesn’t last the full 25 years. The detail most likely to catch a buyer off guard isn’t the warranty, though — it’s that the celebrated 100-night trial never covered the base to begin with.
Updated September 2026: Pricing and tier structure re-checked against current third-party retailer listings, with no drift found from the figures above. One spec not previously listed here: per beds.org’s adjustable-bed database, the FlexFit 3 carries a 700 lb combined weight capacity — worth knowing if you’re comparing it against the heavier-duty bases covered in our best adjustable bed for heavy person guide.