| Literal construction difference | 12-inch Hybrid: adjustable firmness + high-density foam | 13-inch Tri-Brid: adjustable firmness + high-density foam + individually wrapped microcoils | Lux inserts a third support material between the foam-and-air experience: small independent coils. Those coils compress and recover quickly, so they can add localized pushback through the middle of the mattress without taking away the firmness adjustment on either side. Combination sleepers who dislike waiting for foam to recover as they turn have the clearest reason to upgrade. ComfortNext keeps the simpler foam-and-air build for shoppers who prefer close contouring and do not need a springier response. |
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| Literal pressure-relief difference | Advanced relief for hips, shoulders, and knees | Superior relief for hips, shoulders, knees, and lower back | Both models address the three common contact areas most likely to press into the surface, so ComfortNext is already a strong side-sleeper choice. Lux adds the lower back to its published relief map and pairs that broader focus with microcoil response. It is the more persuasive choice when you want the mattress to contour at the shoulders and hips while maintaining more noticeable lift through the waist and lower torso. If lower-back support is not the missing piece in your current bed, ComfortNext covers the shared pressure zones for $850 less. |
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| Literal cooling and airflow difference | Cooling level 3 of 6; 50% more built-in cooling material than ComfortMode | Cooling level 4 of 6; 67% more built-in cooling material than ComfortMode + superior airflow | ComfortNext already sits at the midpoint of Sleep Number's cooling scale and is the better value when you sleep comfortably most nights. Lux adds more heat-moving material and a microcoil layer that creates additional open space within the comfort stack. That combination is worth considering when trapped warmth regularly wakes you or when two sleepers add heat to the same bed. It remains passive temperature management; shoppers who want powered, all-night cooling should compare the Climate collection. |
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| Current Queen price | $2,549.15 current; $2,999 reference price | $3,399.15 current; $3,999 reference price | ComfortNext saves exactly $850 at the reproduced direct-store prices. Lux earns that difference through four visible or named upgrades: one extra inch, microcoils, lower-back relief, and a higher cooling-and-airflow package. Buy the upgrade when at least one of those changes answers a problem you notice in bed; keep the savings when adjustable firmness and the three shared relief zones are the features that matter most. |
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| Base and buy-with-confidence terms | Base sold separately; 100-night trial; 30-night minimum; $250 standard-area return pickup fee | The same separately sold base options and direct-purchase trial terms | Neither model includes a base, and Lux does not receive a longer or more forgiving comfort guarantee. Both eligible mattresses can be returned or exchanged once from day 31 through day 100. Sleep Number charges a $250 pickup fee in standard service areas, and an exchanged product becomes final sale without a new trial. Compare the mattress features first, then add the same preferred foundation or adjustable-base cost to either total. |
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