Serta Perfect Sleeper X | Firm Knox
A smooth top mattress featuring 5 support zones designed for full-body alignment with a combination of responsive coils and graphite-infused memory foam, plus cooling technology.
Perfect Sleeper X Knox Firm 13.5"
Firm and supportive; Great for stomach or back sleepers; 13.5”
Feel
Firm
Support
5 support zones designed for full-body alignment in any sleep position
Pressure Relief
Responsive coils and premium memory foam cradle pressure points
Cooling
Cooling technology and graphite-infused memory foam designed to redistribute body heat
Motion Control
Designed to minimize the impact of your partner's movement
Made for
Back and stomach sleepers
A closer look
What goes into your Perfect Sleeper X Mattress
1. Full-Body Alignment |
2. All-Night Comfort |
3. Pressure Relief |
|
| 5 support zones of responsive coils combined with memory foam for support where you need it | Cooling technology and graphite-infused memory foam offers all-night cooling | Targeted pressure relief from premium memory foam for restorative sleep |
Twin XL |
Full |
Queen |
King/CA King |
| $999 | $1,149 | $1,299 | $1,899 |