Skip to main content
Affiliate Disclosure: SleepRanked earns commissions when you purchase through links on this page, at no extra cost to you. This does not influence our rankings or recommendations. Learn more

Beautyrest Harmony Lux Carbon Medium Pillow Top vs Helix Midnight

Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.

Beautyrest
Harmony Lux Carbon Medium Pillow Top
$1,149
$1,399 MSRP
Queen
Check Price & Today's Deal →
📧 Get notified if this price drops
Helix
Midnight
$1,099
$1,373 MSRP
Queen
Check Price & Today's Deal →
📧 Get notified if this price drops
Feature
Beautyrest
Harmony Lux Carbon Medium Pillow Top
Helix
Midnight
Overview
Type
HybridHybrid
Firmness
1 = softest, 10 = firmest
5.5 / 105.5 / 10
Queen Price
Current / sale price
$1,149$1,099
Trial Period
Return window
100 nights100 nights
Warranty
10 years15 years
Performance Ratings
Cooling
Hot sleepers
HighModerate
Motion Isolation
Partners, light sleepers
ExcellentGood
Pressure Relief
Hip/shoulder pain
GoodExcellent
Edge Support
Sit/sleep near edge
GoodGood
Durability
Long-term performance
GoodGood
Compatibility & Features
Adjustable Base
Head/foot elevation
✓ Yes✓ Yes
Split King Support
Two Twin XL per couple
Dual Comfort Zones
Different firmness per side
Smart Features
App, sensors, auto-adjust
Financing
Synchrony, AffirmAffirm
Materials & Safety
Certifications
Organic / non-toxic
CertiPUR-US, SEAQUALCertiPUR-US
Off-Gassing
New-foam smell concern
CertiPUR-US certified foamCertiPUR-US certified foam
Best For
Ideal sleeper profiles
  • Couples / light sleepers
  • Adjustable base users
  • Organic / non-toxic priority
  • Trial-period conscious shoppers
  • Side sleepers
  • Adjustable base users
  • Organic / non-toxic priority
  • Trial-period conscious shoppers
Actions
Buy Beautyrest Harmony Lux Carbon Medium Pillow TopBuy Helix Midnight
Still deciding? Take our 2-minute mattress quiz →

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

Helix Midnight

Strengths

  • Great for side sleepers
  • Hybrid support + comfort
  • Reasonable price point
  • Zoned lumbar support

Considerations

  • 100-night trial (shorter than some)
  • May not be firm enough for stomach sleepers

Who Should Buy Which?

Choose the Beautyrest Harmony Lux Carbon Medium Pillow Top if you…

  • Couples / light sleepers
  • Organic / non-toxic priority shoppers
Check Beautyrest Price ↗

Choose the Helix Midnight if you…

  • Hot sleepers
  • Side sleepers / pressure relief
Check Helix Price ↗

Beautyrest Harmony Lux Carbon Medium Pillow Top

Compare with Another Mattress

Want to add a third option? Visit the Browse page and select up to 4 mattresses to compare.