One mattress. Three firmness profiles. Built from a five-layer hybrid stack of cooling latex, gel-memory foam and a steel-coil core that lasts 12 years without sagging.
"After two weeks I stopped scrolling at 6am because my back didn't ache."
Maren D., Verified buyerSame hybrid construction. The pressure-relieving comfort layer is what changes — adjust it for back, side or stomach sleep.
For side sleepers and lighter frames who want a deep contour at the shoulder and hip.
The most-shipped option. Balanced support for combination sleepers and couples on different schedules.
Back and stomach sleepers who like a flat, supportive feel with no sink at the hip.
Most "luxury" mattresses are three layers of foam in a sock. Slumber Stack adds a true coil core and a heat-wicking comfort layer that runs cooler than memory foam alone.
Removable, machine-washable, organically blended.
1.5" of perforated natural latex — bouncy, breathable, hypoallergenic.
2" pressure-relieving foam with phase-change cooling beads.
1,024 individually-wrapped 8" coils — zoned 5x for back support.
1.5" of recycled polyfoam holds the structure for 12+ years.
We need 30 nights of body-temperature regulation before your spine reorganizes around the new sleep surface. Here's what to expect.
We schedule a 2-hour window. Your old mattress goes to a recycler; the new one comes up the stairs.
The mattress reaches full 12" loft within 2 hours of unboxing. Sleep on it that night.
Most muscles need 14 nights to relax onto a new contour. This is normal — keep going.
Most buyers report deeper sleep and less morning stiffness here.
If the firmness isn't right, we ship a different profile within 5 business days. No restock fee.
Not for you? We pick it up. The mattress is donated locally and you get a full refund.
I'm a stomach sleeper and the Firm Anchor profile is the first mattress in 6 years that hasn't pinched my lower back. Coils are real coils, not a marketing line.
Aliya O. — PittsburghMy partner runs hot. I run cold. We both sleep through the night now. The cooling layer actually does something.
Reno + Bea — TucsonWhite-glove delivery was the unexpected hero. They took the old mattress, unboxed the new one, and let it expand while I made coffee.
Daniel C. — Brooklyn| Feature | Slumber Stack Hybrid | Showroom mattress (avg) | All-foam DTC (avg) |
|---|---|---|---|
| Trial length | 100 nights | 30 nights | 100 nights |
| Free in-trial firmness swap | Yes | No | No |
| Pocketed coil core | 1,024 zoned coils | Yes | No |
| White-glove delivery | Free | $120 avg | No |
| Old-mattress haul-away | Free | $60 avg | No |
| Warranty | 12 years | 10 years | 10 years |
| Median Queen price | $1,495 | $2,400 | $1,150 |
If your body doesn't agree with the mattress, we pick it up free and refund the order. No restock fee, no return shipping cost, no gotchas.