Beautyrest Harmony Lux Carbon Medium Pillow Top vs Sleep Number 360 c2 Smart Bed
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
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Check current price at Beautyrest →Last verified 50 days ago — check current pricing at Sleep Number
Check current price at Sleep Number →| Feature | Beautyrest Harmony Lux Carbon Medium Pillow Top | Sleep Number 360 c2 Smart Bed |
|---|---|---|
| Overview | ||
Type | Hybrid | Smart Bed |
Firmness 1 = softest, 10 = firmest | 5.5 / 10 | 5 / 10 |
Queen Price Current / sale price | Check retailer | Check retailer |
Trial Period Return window | 100 nights | 100 nights |
Warranty | 10 years | 15 years |
| Performance Ratings | ||
Cooling Hot sleepers | High | Low |
Motion Isolation Partners, light sleepers | Excellent | Fair |
Pressure Relief Hip/shoulder pain | Good | Fair |
Edge Support Sit/sleep near edge | Good | Fair |
Durability Long-term performance | Good | Good |
| Compatibility & Features | ||
Adjustable Base Head/foot elevation | ✓ Yes | ✗ No |
Split King Support Two Twin XL per couple | — | — |
Dual Comfort Zones Different firmness per side | — | ✓ Yes |
Smart Features App, sensors, auto-adjust | — | SleepIQ biometric tracking (heart rate, breathing, movement), adjustable firmness 0-100 scale per side, Responsive Air auto-adjustment, Sleep Number app (iOS/Android) |
Financing | Synchrony, Affirm | Affirm |
| Materials & Safety | ||
Certifications Organic / non-toxic | CertiPUR-US, SEAQUAL | None listed |
Off-Gassing New-foam smell concern | CertiPUR-US certified foam | — |
| Best For | ||
Ideal sleeper profiles |
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| Actions | ||
Need Help Deciding?
For most sleepers, we recommend the Beautyrest Harmony Lux Carbon Medium Pillow Top over the Sleep Number 360 c2 Smart Bed. It scores higher in motion isolation, pressure relief, edge support and delivers stronger overall value. The Sleep Number 360 c2 Smart Bed is the better choice only if you and your partner need different firmness levels on each side.
Beautyrest Harmony Lux Carbon Medium Pillow Top vs Sleep Number 360 c2 Smart Bed: What Actually Differs
The Beautyrest Harmony Lux Carbon Medium Pillow Top is a hybrid build, while the Sleep Number 360 c2 Smart Bed is a smart bed — that single difference drives most of the cooling, motion, and feel decisions below. The Beautyrest Harmony Lux Carbon Medium Pillow Top stands 15.75" tall versus 8" for the Sleep Number 360 c2 Smart Bed — a 7.8" gap that matters if you need deep-pocket sheets or are pairing with an adjustable base. Both sit at roughly 5.5/10 on the firmness scale — a medium feel — so neither one is the answer if you need a dramatically different support level. The single largest performance gap is in motion isolation: the Beautyrest Harmony Lux Carbon Medium Pillow Top rates noticeably higher than the Sleep Number 360 c2 Smart Bed, which is the deciding factor if that dimension is high on your list. On a Queen, the Sleep Number 360 c2 Smart Bed runs $909 versus $1,149 for the Beautyrest Harmony Lux Carbon Medium Pillow Top — roughly $240 (21%) less, which is enough to factor into the decision unless the pricier model wins clearly on the specs you care about.
Which Is Better For Your Sleep Style?
Higher pressure-relief rating, which is what protects hip and shoulder contact points in the side position.
Firmness of 5.5/10 is closer to the medium-firm sweet spot back sleepers need for lumbar support (vs 5/10).
Firmer at 5.5/10 vs 5/10 — stomach sleepers need the extra support to keep the pelvis from sinking and arching the lower back.
Cooling rating not available for one or both mattresses — spec not available.
stronger perimeter / edge support — the two specs heavier sleepers should weight most.
Softer at 5/10 vs 5.5/10 — lighter sleepers compress less, so they typically need the softer of two options to get proper contouring.
Higher motion-isolation rating, which means less disturbance when a partner moves or gets out of bed.
Price Comparison (Queen)
| Mattress | MSRP | Current | Sale? |
|---|---|---|---|
| Sleep Number 360 c2 Smart Bed | $1,299 | $909 | Save $390 |
| Beautyrest Harmony Lux Carbon Medium Pillow Top | $1,399 | $1,149 | Save $250 |
The Sleep Number 360 c2 Smart Bed is the budget choice at $909 — $240 less than the Beautyrest Harmony Lux Carbon Medium Pillow Top ($1,149). That's a 21% gap, which is worth weighing against the spec differences before deciding which delivers better value for your situation. Both are currently below MSRP.
Beautyrest Harmony Lux Carbon Medium Pillow Top
Strengths
- ✓InfiniCool Lux cooling technology
- ✓T2 pocketed coils for airflow
- ✓SEAQUAL ocean-plastic fabric cover
- ✓100-night trial
Considerations
- —DISCONTINUED Aug 19, 2025 — clearance only
- —Replaced by Beautyrest Black/Pressure Smart lines
- —Limited inventory — verify availability before publishing links
Sleep Number 360 c2 Smart Bed
Strengths
- ✓Adjustable firmness 0-100 (per side)
- ✓SleepIQ sleep tracking included
- ✓Dual-zone customization for couples
- ✓15-year warranty
Considerations
- —No active cooling
- —Thinnest at 8-inch (limited comfort layers)
- —Requires ongoing app usage for full benefit
Who Should Buy Which?
Choose the Beautyrest Harmony Lux Carbon Medium Pillow Top if you…
- →Couples / light sleepers
- →Side sleepers / pressure relief
- →Sitting near the edge
- →Organic / non-toxic priority shoppers
Choose the Sleep Number 360 c2 Smart Bed if you…
- →Budget-conscious shoppers
- →Couples with different firmness preferences