Dream Republic
Serta Perfect Sleeper Sierra Quest 2.0 adjustable foundation
Feel is what you notice first. Support is what your body relies on — choose the support system, then everything else.
Quantity
Feel
Firm, Medium and Plush are chosen by range, all at one price — your preference, not your support system. The support architecture stays the same across all three.
- Guarantee & warranty included
- Delivery & setup
- Secure checkout
Why support comes first
Feel is what you notice first. Support is what your body relies on. Every Zen’nZzz’s mattress is chosen support-system first — the engineered structure that keeps your spine aligned and holds its shape, night after night, for years.
Inside this mattress
ENGINEERED FOR BETTER SLEEP. DESIGNED FOR TOTAL CONTROL.
With over 90 years of expertise, Serta is globally recognised for delivering advanced sleep systems that prioritise comfort, support, and long-term wellness. As America’s #1 bedding brand and the official mattress of the National Sleep Foundation, Serta combines proven technology with premium materials to transform the way you sleep.
🛏️ FEEL
Plush Comfort
Pressure-relieving softness with underlying structured support
🧬 SUPPORT SYSTEM
HYBRID POCKET COIL SYSTEM
- Foam-encased pocket coil system for edge-to-edge support
- Contra-rotating coils for enhanced durability
- Minimises partner disturbance
- Maintains structure and reduces height loss over time
- Supports up to 140kg per person
Best for: Plush comfort with stable, responsive support
☁️ COMFORT LAYERS
HIGH-DENSITY PURE FOAM
- 100% pure polyurethane foam with no added fillers
- Maintains structure and reduces sagging
- Designed for long-lasting comfort and recovery
GEL-INFUSED MEMORY FOAM
- Contours to your body for pressure relief
- Reduces motion transfer between partners
- Reacts to body temperature and weight
- Resistant to allergens and micro-organisms
🧵 FABRIC TECHNOLOGY
BIOCARE™ KNIT TICKING
- Advanced fabric using nano-technological yarns
- Designed to enhance comfort and breathability
- Helps reduce exposure to electromagnetic waves
- Creates a cleaner, more balanced sleep environment
🌿 HEALTH & HYGIENE
- Anti-mite and anti-bacterial treatment
- Helps create a cleaner, healthier sleep surface
💥 KEY BENEFITS
- ✔ Pressure-relieving comfort
- ✔ Proper back support and alignment
- ✔ Balanced sleeping temperature
- ✔ Undisturbed sleep
- ✔ Resists sagging and edge roll-off
- ✔ Adapts to different body weights
⚙️ ERGOMOTION ADJUSTABLE BASE
CONTROL YOUR COMFORT
- Wireless remote control
- Two programmable presets
- Foot articulation for customised positioning
- Zero Gravity and Gravity Release settings
WHY IT MATTERS
- Improves circulation by elevating head and feet
- Reduces lower back pressure
- Helps with digestion and acid reflux
- Relieves joint pressure and inflammation
- Supports easier breathing (snoring, sleep apnea, asthma)
ZERO GRAVITY MODE
Inspired by NASA research, Zero Gravity positioning helps:
- Reduce pressure on the spine
- Relieve tension in the neck and back
- Improve overall relaxation and recovery
🛏️ FOUNDATION SUPPORT
This mattress is designed to work with a compatible base for optimal performance and longevity.
📏 PRODUCT SPECIFICATIONS
- Firmness: Plush
- Maximum Weight: 140kg per person
- Dimensions (Queen XL): 152cm (W) x 200cm (L)
🛡️ WARRANTY
- 2 Year Guarantee
- 10 Year Service Warranty (inclusive of guarantee)
How the support systems compare
Firm, Medium and Plush describe feel. They don’t describe how well a mattress supports you. This is how the engineered support systems compare, low to high.
| Feature / benefit | Foam Core | Fibre Pad Core | Bonnell Spring | Power Coil | Pocket Coil | MiraCoil® | Power Pocket | Best of Both™ |
|---|---|---|---|---|---|---|---|---|
| Recommended by our Support-First philosophy | Not recommended | Not recommended | Entry | Recommended | Recommended | Recommended | Recommended | Our highest recommendation |
| Primary purpose | Comfort | Comfort | Basic support | Reinforced support | Adaptive support | Structural support | Reinforced + adaptive response | Structural support + adaptive comfort |
| Long-term spinal alignment | ||||||||
| Pelvic & lumbar support | ||||||||
| Even weight distribution | ||||||||
| Support consistency over time | ||||||||
| Edge-to-edge structural stability | ||||||||
| Motion isolation | ||||||||
| Airflow & ventilation | ||||||||
| Moisture management | ||||||||
| Durability of the support core | ||||||||
| Suitable for higher body weights | ||||||||
| Core feel influence | ||||||||
| Pressure redistribution | ||||||||
| Foundation for premium mattresses |
A qualitative comparison of support-system design, assuming comparable mattress quality. Comfort layers, materials and overall construction also influence real-world performance. “Recommended” reflects the Support-First philosophy, not a judgement of any individual mattress.
The pinnacle: Best of Both™
MiraCoil® for structural alignment and edge-to-edge stability, Pocket Coil for contouring and pressure relief — combined in a single engineered system, always paired with Universal Feel™.