Specification and editorial comparison · lab measurements not available
Updated October 2026
Category
SFERRA Sonno Notte Luxury Firm
Purple RejuvenatePlus
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
7.5/10
7.2/10
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
SFERRA Sonno Notte Luxury Firm
Purple RejuvenatePlus
Type
Luxury Firm Innerspring
Hybrid
Firmness
7/10
5.5/10
Height
14.5 inches
15.5 inches
Shipping
White glove delivery
Free delivery in 7-10 days; FSA/HSA eligible
Model specifications are catalog reference details, not instrumented measurements. Confirm the exact configuration and current seller terms.
Key Advantages
Why Choose SFERRA Sonno Notte Luxury Firm
- Exceptional build quality — hand-tufted, made in USA
- Natural Talalay latex comfort layer for responsive support
- Individually pocketed coils minimize motion transfer
Why Choose Purple RejuvenatePlus
- Widest sleeper-position range in the Rejuvenate collection; genuinely works for side, back and combination
- DreamLayer top softens the grid's first impression while keeping airflow intact