Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Sleep Number i8 Smart Bed
Birch Elite Natural
Comfort
8.8/10
Not lab tested
Support
8.9/10
Not lab tested
Cooling
8.5/10
Not lab tested
Edge Support
8/10
Not lab tested
Motion Isolation
9.5/10
Not lab tested
Durability
8.3/10
Not lab tested
Value
7.5/10
8.5/10
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
Sleep Number i8 Smart Bed
Birch Elite Natural
Price (Queen)
$3,099
$2,812
Type
Air Chamber
Latex Hybrid
Firmness
5/10
5/10
Height
11 inches
13 inches
Trial
100 nights
120 nights
Warranty
15 years
Limited lifetime warranty
Shipping
In-home delivery
Free shipping; made to order and assembled in Arizona
Key Advantages
Why Choose Sleep Number i8 Smart Bed
- Adjustable firmness 0-100
- Dual-zone for couples
- Advanced sleep tracking
Why Choose Birch Elite Natural
- Three GOLS-certified organic latex layers plus a steel microcoil layer — the most comfort material in the Birch range
- Plush quilted organic cotton Euro top over natural New Zealand wool
- Zoned lumbar support and full perimeter reinforcement in the 8-inch coil base