Side-by-side mattress testing · 144+ comparisons published
Updated May 2026
Category
NapQueen Bamboo Charcoal Memory Foam
Spa Sensations Serenity 8" Memory Foam
Comfort
8/10
7.5/10
Support
7.5/10
7/10
Cooling
8.3/10
6.8/10
Edge Support
6/10
5.5/10
Motion Isolation
8.5/10
8.5/10
Durability
7.2/10
6.8/10
Value
9.2/10
9.5/10
Quick Specs Comparison
Spec
NapQueen Bamboo Charcoal Memory Foam
Spa Sensations Serenity 8" Memory Foam
Price (Queen)
$139
$180
Type
Memory Foam
Memory Foam
Firmness
5.5/10
5.5/10
Height
10 inches
8 inches
Trial
100 nights
90 days (Walmart)
Warranty
10 years
10 years
Shipping
Free shipping
Free shipping
Key Advantages
Why Choose NapQueen Bamboo Charcoal Memory Foam
- Bamboo charcoal reduces odors and absorbs moisture
- Nearly 3,000 positive customer reviews
- Bamboo-derived cover adds breathability
Why Choose Spa Sensations Serenity 8" Memory Foam
- Incredibly affordable — $180 for a queen
- Over 27,000 reviews with 4.4-star average
- Green tea and charcoal infused for freshness