Serta
Serta Classic Sanctuary
Feel is what you notice first. Support is what your body relies on: choose the support system, then everything else.
Quantity
- Guarantee & warranty included
- Delivery & setup
- Secure checkout
- Available in 11 sizes
- Guarantee & warranty included
- Delivery & setup
- Buy now, pay later options
- Secure checkout
Not sure this is the right bed? Start with your support.
Find My Support →- BrandSerta
- SupportMiraCoil® · Pocket Coil
- Calibrated FeelFirm · Medium · Plush
- SidesSingle or double sided
- SetFull Set · Mattress Only
Every good night's sleep starts with the right support. At Zen'nZzz's we believe the support system should be chosen before the feel. Support keeps your spine aligned, distributes body weight and helps maintain lasting comfort night after night. Once you've chosen the support system that's right for your body, you simply choose the feel you prefer: Firm, Medium or Plush with Serta, or one balanced Calibrated Feel™ with Lylax. Feel is what you notice first. Support is what your body relies on for years.
Firm, Medium and Plush describe feel. They don’t describe how well a mattress supports you. This is how the support systems compare.
| Support system | 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 |
| Ratings | ||||||||
| 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 | ||||||||
Why we don’t recommend foam or fibre as a core: they make good comfort layers, but as a support core they compress under pressure, retain heat and fatigue faster than a spring system.
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.
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 Calibrated Feel™.
| Size | Single sided | Double sided |
|---|---|---|
| Single (91cm) | ✓ | ✓ |
| Single Extra Length | ✓ | ✓ |
| Three Quarter (107cm) | ✓ | ✓ |
| Three Quarter Extra Length | ✓ | ✓ |
| Double (137cm) | ✓ | ✓ |
| Double Extra Length | ✓ | ✓ |
| Queen (152cm) | ✓ | ✓ |
| Queen Extra Length | ✓ | ✓ |
| King (183cm) | ✓ | ✓ |
| King Extra Length | ✓ | ✓ |
| California King (200cm) | ✓ | ✓ |
Explore Our Ranges
Questions About Serta Classic
Which spring systems does this range come in?
This range comes in MiraCoil® and Pocket Coil. The spring system is the first choice you make; the feel layers come second.
Single or double sided?
Single sided mattresses have one sleep surface and never need flipping. Double sided mattresses are finished on both sides, so they can be turned over.
Can I choose Firm, Medium or Plush?
Yes. Each model offers Firm, Medium or Plush at the same price. Feel is subjective, so treat it as a preference that comes after your spring system.