Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Helix Midnight Elite
King Koil FLOWT
Comfort
Not lab tested
Not lab tested
Support
Not lab tested
Not lab tested
Cooling
Not lab tested
Not lab tested
Edge Support
Not lab tested
Not lab tested
Motion Isolation
Not lab tested
Not lab tested
Durability
Not lab tested
Not lab tested
Value
8/10
7.8/10
Blank cells mean that model has not completed our instrumented lab protocol, so we publish no measured score for it. We never estimate a number we have not recorded.
Quick Specs Comparison
Spec
Helix Midnight Elite
King Koil FLOWT
Price (Queen)
$3,278
$2,999
Type
Luxury Hybrid
Luxury Hybrid
Firmness
6/10
6/10
Height
15 inches
14 inches
Trial
120 nights
120 nights
Warranty
Limited lifetime warranty
10 years
Shipping
Free shipping; in-home setup and old mattress removal available
Free white glove delivery on most orders
Key Advantages
Why Choose Helix Midnight Elite
- GlacioTex Elite cooling cover and CoolForce layer included as standard, not an upcharge
- Two coil systems — a microcoil comfort layer plus an 8-inch pocketed coil base
- Zoned lumbar reinforcement and full perimeter edge coils
Why Choose King Koil FLOWT
- Spiral coil system keeps lateral airflow open — excellent heat dissipation
- Cooling gel comfort layers stay neutral through the night
- Responsive medium feel suits combination sleepers