No more joint pain: Save $1,284 on Sleep Number’s top smart mattress this Labor Day

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There's 15% off the Sleep Number ComfortNext Lux in today's Labor Day mattress sales, a smart bed with 100 firmness levels for personalized side sleeper comfort

The Sleep Number ComfortNext Lux in a bedroom. A deals badge is seen in the top right foreground.
(Image credit: Sleep Number)

Labor Day is here, making now one of the best times to invest in a new mattress for less — and I've got my eye on a certain Sleep Number smart bed. The ComfortNext Lux Mattress, now up to $1,284.75 at Sleep Number, is a smart mattress designed to provide advanced relief to side sleeper's shoulders and hips.

This year's best mattresses balance comfort and support, and the ComfortNext Lux does just that. Like most picks in our best smart mattress guide, the ComfortNext Lux boasts adjustable firmness, with 100 different firmness levels to choose from.

We're in the process of reviewing this bed, but our lead tester has already reported that he's waking up "more refreshed and with less joint pain." Today's your last chance to shop the Labor Day mattress sales before prices go back up, so let's take a closer look at this deal...

Sleep Number ComfortNext Lux (twin XL)
Save 15%
Sleep Number ComfortNext Lux (twin XL): was $3,599 now $3,059.15 at Sleep Number

There's up to 15% off all sizes of the ComfortNext Lux in today's Labor Day sales, which takes a queen down to $3,399.15 from $3,999. That equates to a maximum saving of $1,284, which is an excellent Sleep Number mattress sale. We have tracked 25% off this model in the past, so it could be worth holding out if you want to buy at its lowest possible price. Benefits include a 100-night trial and 10-year warranty.

User score: ★★★★★

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Advanced comfort to side sleepers and couples...

The brand describes the ComfortNext Lux as possessing "superior" pressure relief, aiming to reduce build-up in key side sleeper pressure points: shoulders, hips and knees.

Its 100 adjustable firmness levels acknowledge that firmness is subjective, with some side sleepers needing firmer comfort than others. Plus, back and stomach sleepers should be pleased that the ComfortNext Lux is built to provide good lumbar support.

As for bed-sharing couples, the good news is that you can select your own firmness settings independent of the other side of the bed. This means that if your partner prefers a firmer bed while you like a softer mattress (or vice versa), you can choose your respective firmness levels and cancel the sleep divorce.

Looking for something a little cheaper?

Sleep Number ComfortMode Mattress (twin)
Save 10%
Sleep Number ComfortMode Mattress (twin): was $1,099 now $989.10 at Sleep Number

Like the ComfortNext Lux, the entry-level ComfortMode mattress is designed to provide joint and pressure point relief. While it doesn't offer as much cooling tech and cushioning as the more advanced models, it still offers adjustable firmness and a hybrid design. At 10% off, a queen is $1,439.10 (was $1,599).

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Labor Day mattress sales 2026: More top deals at a glance

Frances Daniels
Frances Daniels
Senior Sleep Staff Writer

Frances Daniels is a PPA-accredited journalist and Sleep Staff Writer at Tom's Guide with an MA in Magazine Journalism from Cardiff University. Her role includes covering mattress and sleep news and writing sleep product reviews and buyer's guides, including our Best Hybrid Mattress 2025 guide. She is interested in the relationship between sleep and health, interviewing an array of experts to create in-depth articles about topics such as nutrition, sleep disorders, sleep hygiene, and mattress care. She is also our specialist on mattress toppers — producing bed topper reviews and taking care of our Best Mattress Toppers 2025 guide — and leads content relating to fiberglass-free beds for a non-toxic sleep. Outside of Tom's Guide, she has written for Ideal Home and Marie Claire.

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