Serta PerfectcomfortX Phoenix Tight Top Luxury Firm

The Serta Perfect Comfort X Phoenix is a 14.5" firm mattress — the tallest build in the Perfect Comfort X lineup at this firmness — built around the same 5-zone coil and memory foam system as the rest of the collection, with graphite-infused Perfect Conform™ Memory Foam and dedicated cooling technology.

It delivers the same firm, supportive feel as the Pixel, but in a taller profile — which typically means a bit more foam depth between you and the coil system, for a slightly more substantial, higher-off-the-frame feel while still keeping the firm support underneath.

Phoenix at a Glance

• Comfort level: Firm (position 2 of 5: Extra Firm, Firm, Medium, Plush, Ultra Plush)
• Profile height: 14.5"
• Support system: 5 ZoneActive™ Design — 5 zoned coils + micro coils + contouring memory foam
• Comfort layer: Graphite-infused Perfect Conform™ Memory Foam
• Cooling: Dedicated cooling technology for enhanced airflow and heat dissipation
• Adjustable base compatible: Yes
• Certification: CertiPUR-US® certified
• Assembly: 100% Canada assembled
• Warranty: 10-year warranty

A Good Fit If You’re:

• A back or stomach sleeper who wants firm support but also likes the taller, more substantial look and feel of a higher-profile mattress
• On the heavier side and want extra material depth working alongside firm support, not instead of it
• Upgrading from a low-profile mattress and want the bed to feel more prominent in the room
• Someone who’s tried firmer mattresses before and found them too thin or "flat" feeling
• Sharing a bed and want firm, motion-isolating support without sacrificing that plusher, taller mattress look

What Stands Out on the Phoenix

• The added half-inch of profile gives you more material working above the coil system before you feel the support underneath
• Same 5-zone engineering as the rest of the Perfect Comfort X line, so the firmness is targeted, not blanket-uniform
• Graphite-infused memory foam manages heat even with the taller foam stack
• A firm mattress that still has real visual and physical presence on the bed frame

Firm Support, Taller Build

The Phoenix proves firm doesn’t have to mean thin. At 14.5", it’s built with more material between the sleeper and the coil system than most firm mattresses carry, without softening the actual support underneath. That makes it a strong option for anyone who wants the durability and spinal support of a firm mattress but doesn’t want to give up the taller, more substantial feel of a higher-profile bed.

See the Phoenix in Person at Mr. Liquidator

The extra profile is something you notice the moment you sit on the edge of the bed. Visit Mr. Liquidator Mattress Outlet in Chilliwack to try the Phoenix yourself, or ask us about pickup and delivery anywhere in the Fraser Valley.