Beautyrest Black K-Class Medium Pillow Top vs Beautyrest Black X-Class Medium Pillow Top
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
Pricing unavailable — visit Beautyrest for current rates
Check current price at Beautyrest →Pricing unavailable — visit Beautyrest for current rates
Check current price at Beautyrest →Pricing unavailable — visit Helix for current rates
Check current price at Helix →| Feature | Beautyrest Black K-Class Medium Pillow Top | Beautyrest Black X-Class Medium Pillow Top | Helix Dusk Luxe |
|---|---|---|---|
| Overview | |||
Type | Hybrid | Hybrid | Hybrid |
Firmness 1 = softest, 10 = firmest | 5 / 10 | 5 / 10 | 6 / 10 |
Queen Price Current / sale price | Check retailer | Check retailer | Check retailer |
Trial Period Return window | 30 nights | 30 nights | 100 nights |
Warranty | 10 years | 10 years | Lifetime |
| Performance Ratings | |||
Cooling Hot sleepers | Excellent | Excellent | High |
Motion Isolation Partners, light sleepers | Excellent | Excellent | Excellent |
Pressure Relief Hip/shoulder pain | Excellent | Excellent | Excellent |
Edge Support Sit/sleep near edge | Excellent | Excellent | Excellent |
Durability Long-term performance | Excellent | Excellent | Excellent |
| Compatibility & Features | |||
Adjustable Base Head/foot elevation | ✓ Yes | ✓ Yes | ✓ Yes |
Split King Support Two Twin XL per couple | — | — | ✓ Yes |
Dual Comfort Zones Different firmness per side | — | — | — |
Smart Features App, sensors, auto-adjust | — | — | — |
Financing | Available | Available | Affirm |
| Materials & Safety | |||
Certifications Organic / non-toxic | None listed | None listed | CertiPUR-US, OEKO-TEX |
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 Black K-Class Medium Pillow Top over the Beautyrest Black X-Class Medium Pillow Top. It scores higher in price-to-value and delivers stronger overall value. The Beautyrest Black X-Class Medium Pillow Top is the better choice only if you have a strong preference for that brand's specific feel or design.
Beautyrest Black K-Class Medium Pillow Top vs Beautyrest Black X-Class Medium Pillow Top: What Actually Differs
Both the Beautyrest Black K-Class Medium Pillow Top and Beautyrest Black X-Class Medium Pillow Top are hybrid mattresses, so the real differences come down to firmness tuning, performance ratings, and price rather than construction type. The Beautyrest Black X-Class Medium Pillow Top stands 16" tall versus 14.5" for the Beautyrest Black K-Class Medium Pillow Top — a 1.5" gap that matters if you need deep-pocket sheets or are pairing with an adjustable base. Both sit at roughly 5/10 on the firmness scale — a medium feel — so neither one is the answer if you need a dramatically different support level. On a Queen, the Beautyrest Black K-Class Medium Pillow Top runs $2,599 versus $3,999 for the Beautyrest Black X-Class Medium Pillow Top — roughly $1,400 (35%) 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?
Both rate the same for pressure relief — choose on firmness instead (side sleepers usually prefer the softer of the two: Beautyrest Black X-Class Medium Pillow Top at 5/10).
Both fall in the medium-firm zone back sleepers prefer (5/10 vs 5/10) — either works.
Effectively the same firmness (5/10 vs 5/10). Stomach sleepers generally want 7+/10 — neither is ideal if both rate lower.
Cooling rated the same on both — neither has a heat-management edge in our spec data.
Durability and edge-support ratings are equivalent — either holds up.
Both have similar firmness and pressure-relief profile — either works.
Motion isolation rated the same on both — neither has a transfer-disturbance edge.
Price Comparison (Queen)
| Mattress | MSRP | Current | Sale? |
|---|---|---|---|
| Beautyrest Black K-Class Medium Pillow Top | $2,599 | $2,599 | At MSRP |
| Beautyrest Black X-Class Medium Pillow Top | $3,999 | $3,999 | At MSRP |
The Beautyrest Black K-Class Medium Pillow Top is the budget choice at $2,599 — $1,400 less than the Beautyrest Black X-Class Medium Pillow Top ($3,999). That's a 35% gap, which is worth weighing against the spec differences before deciding which delivers better value for your situation.
Beautyrest Black K-Class Medium Pillow Top
Strengths
- ✓Thicker BlackICE cooling system vs C-Class
- ✓Higher coil count — more targeted pressure relief
- ✓Substantial pillow top with advanced contouring foam
Considerations
- —A meaningful step up in price — reflects additional materials and specifications in this configuration
- —Mattress Firm exclusive — no DTC option
Beautyrest Black X-Class Medium Pillow Top
Strengths
- ✓Highest coil count and thickest BlackICE cooling in the Beautyrest lineup
- ✓16" height — true luxury-tier mattress construction
- ✓Best pressure relief and cooling of any Beautyrest model
Considerations
- —Among the most premium options in this category — reflects premium materials and construction above mainstream mattress standards
- —Mattress Firm exclusive — no 365-night trial available
Helix Dusk Luxe
Strengths
- ✓Best-in-class motion isolation for hybrid class
- ✓TENCEL cover standard
- ✓Zoned lumbar memory foam
- ✓Optional GlacioTex Cooling Cover
Considerations
- —GlacioTex cooling is add-on cost
- —May not fit all budgets — premium materials and construction above mainstream mattress standards
- —Firmer than most couples prefer at 6/10
Who Should Buy Which?
Choose the Beautyrest Black K-Class Medium Pillow Top if you…
- →Budget-conscious shoppers
Choose the Beautyrest Black X-Class Medium Pillow Top if you…
- →Shoppers seeking a different sleep experience