What Is a Deep Mattress — And Why It Matters for Your Sleep
When buying a mattress, most people focus on firmness, material, or price, but one crucial factor often overlooked is mattress depth. Choosing the right depth can transform your sleep, providing better comfort, pressure relief, and support. In this guide, we’ll explore what counts as a deep mattress, the benefits, and show you the best deep mattresses available in the UK.
✅ What Is a Deep Mattress?
A standard mattress usually measures 20–30 cm deep (≈8–12 inches), while a deep mattress is typically 30 cm or more — sometimes up to 35 cm+ depending on construction. Deep mattresses often contain multiple comfort layers, a support core, and additional top layers of foam, memory foam, or latex, which provide enhanced comfort and durability.
🛏️ Benefits of a Deep Mattress
Superior Comfort & Pressure Relief
Deep mattresses provide thicker comfort layers that contour to your body. This is ideal for:
- Side sleepers needing extra cushioning for shoulders and hips
- Heavier sleepers who need support without bottoming out
- Anyone with back or joint pain
Our Silentnight Oslo Miracoil Memory Cushion Top Mattress is a perfect example of a memory foam deep mattress that combines plush comfort with excellent support.
Strong Support & Durability
- The deeper the mattress, the more substantial the support core, giving better spinal alignment and preventing sagging.
- Couples or heavier individuals benefit from added stability in sleep.
Check out the Deepsleep Bronze 1500 Mattress — a premium hybrid deep mattress designed for long-lasting support.
Luxury Look & Bed Height
- Deep mattresses add luxury and visual appeal, especially on upholstered beds.
- Bed height is taller, making it easier to sit down and get up — though remember, deep mattresses need deep pocket sheets.
See our Limelight Perth Oak Storage Bed Frame paired with a deep mattress for a hotel-style setup.
🔎 Types of Deep Mattresses
| Mattress Type | Depth (cm) | Why It’s Deep |
|---|---|---|
| Memory Foam | 25–30 cm | Comfort layers contour to the body. Silentnight Oslo Memory |
| Hybrid / Pocket-Spring + Foam | 25–35 cm | Combines support + plush comfort. Deepsleep Bronze 1500 |
| Orthopaedic / Premium | 28 cm+ | Designed for back support and heavier sleepers, a Breasley UNO Mattress offers a deeper sleep experience. |
🛒 Choosing the Best Deep Mattress at Mattresses365
- Check the depth — 28–35 cm is ideal for comfort and support.
- Select the right type — memory foam, hybrid, or orthopaedic depending on your sleep style.
- Match your bed frame — deep mattresses may need deep-pocket sheets or a compatible bed base.
Top picks from Mattresses365:
- Silentnight Oslo Miracoil Memory Cushion Top Mattress – a luxurious memory foam deep mattress designed for superior comfort, pressure relief, and excellent support for all sleeping positions.
- Deepsleep Bronze 1500 Mattress – a hybrid deep mattress combining pocket springs and foam layers for enhanced support, durability, and deep sleep comfort, perfect for back and side sleepers.
- Breasley UNO Mattress – an orthopaedic deep mattress engineered to provide firm support, alleviate back pain, and promote healthy spinal alignment for all-night comfort.
⚠️ When a Deep Mattress May Not Be Suitable
- Bed too high for shorter sleepers
- Existing bed frame not compatible
- Heavier cost and more challenging to move
✅ Final Thoughts: Sleep Deep for Better Rest
A deep mattress in the UK is more than a trend — it’s a sleep upgrade. By providing extra comfort, support, and durability, deep mattresses can improve sleep quality, reduce aches, and add a luxurious feel to your bedroom. Explore the best deep mattresses at Mattresses365 and find your perfect mattress today.
