The Duke

Luxurious Comfort & Lasting Support

The Duke Mattress offers a medium firm feel with a premium blend of sheep wool and natural latex, ensuring optimal comfort, pressure relief, and temperature regulation. Designed for durability, it provides long-lasting support while maintaining a plush and breathable sleep surface. Ideal for those seeking a balanced combination of comfort and resilience for a truly restful sleep experience.

1. Soft Sheep wool layer and Tufted Sleep Technology

The soft sheep wool layer naturally regulates temperature and moisture, keeping you cool in summer and warm in winter for year-round comfort. It also enhances breathability, wicks away moisture, and provides a plush, cushioning feel. Tufted technology reinforces durability by preventing body indentations, maintaining mattress shape, and keeping layers securely in place. This combination ensures long-lasting support, extended mattress lifespan, and consistent comfort over time.

2. Modern Breathable Border

The modern border features a breathable knitted fabric with anti-microbial and anti-bacterial properties, ensuring a cleaner, healthier sleep environment. Designed for durability, it resists wear and tear while optimizing heat dissipation for a cool and comfortable rest. Reinforced with tough steel wire, it provides superior edge support, preventing sagging and maintaining the mattress’s shape over time.

3. Natural Latex Foam

Natural Latex foam in a mattress contours to the body, reducing pressure points and promoting proper spinal alignment. Its natural elasticity enhances durability, prevents sagging, and ensures lasting comfort. Highly breathable, it regulates temperature for a cooler sleep. Naturally hypoallergenic and antimicrobial, it resists dust mites, mold, and bacteria—ideal for allergy sufferers. With excellent motion isolation and eco-friendly materials, latex foam offers resilient support and a refreshing sleep experience.

4. Blue Bead Hypersoft Polyurethane Foam

Blue Bead Hypersoft Polyurethane Foam offers exceptional plushness and pressure relief, gently contouring to the body to reduce strain on joints and muscles. Its advanced open-cell structure enhances airflow, promoting temperature regulation and preventing heat buildup for a cooler, more comfortable sleep. Infused with blue beads, it further improves moisture-wicking and breathability, ensuring freshness and prolonged mattress longevity. The foam’s resilient yet soft composition provides a luxurious feel while maintaining durability and preventing premature sagging. Additionally, its shock-absorbing properties help with motion isolation, reducing sleep disturbances from movement. Designed for enhanced comfort, support, and long-term performance, Blue Bead Hypersoft Foam elevates the sleep experience.

5. Nested Pocket Spring

A Nested Pocket Spring System features a honeycomb coil structure, where tightly packed, individually wrapped coils provide enhanced support and durability. This high-density design ensures targeted pressure relief, adapts to body zones for optimal spinal alignment, and minimizes motion transfer for undisturbed sleep. The open structure promotes airflow, keeping the mattress cool, while reinforced edge support prevents sagging and roll-off, maximizing the sleep surface. This advanced system delivers superior comfort, stability, and long-lasting performance for a truly restorative sleep.

6. Foam Encased

The spring unit is encased in high-density firm polyurethane foam, creating a reinforced edge support system that prevents sagging, maximizes durability, and extends the usable sleep surface. This design enhances stability, reduces motion transfer, and ensures consistent support from edge to edge for a more restful sleep experience.

7. Breathable Slatted Base

A Breathable Slatted Base enhances airflow beneath the mattress, preventing moisture buildup and promoting a cooler, fresher sleep environment. The evenly spaced slats provide balanced support, helping to maintain the mattress’s shape and prolong its lifespan by reducing pressure points and preventing sagging.

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What is a Tufted Mattress?

A tufted mattress is designed with a unique construction method where the mattress layers are secured together using durable tufting techniques. This involves inserting tufts or stitches through the mattress to hold the layers in place, preventing shifting, sagging, or uneven wear over time. This process enhances the mattress’s structural integrity and longevity, ensuring a consistently supportive and comfortable sleep surface.

Benefits of a Tufted Mattress:

✅ Enhanced Durability – Tufting prevents internal layers from shifting, maintaining mattress structure over time.
✅ Improved Support – Keeps comfort layers evenly distributed for consistent spinal alignment.
✅ Minimizes Sagging & Indentations – Prevents body impressions and extends mattress lifespan.
✅ Even Pressure Distribution – Helps reduce pressure points by keeping materials firmly in place.
✅ Luxury Comfort & Stability – Provides a balanced feel with reinforced stability for long-term use.

Will the hollows caused by tufting affect my sleep?

No, tufting is designed to enhance mattress stability without affecting comfort. High-quality tufted mattresses have soft, padded coverings that ensure a smooth and plush feel while reinforcing durability. The hollows created by tufting help prevent body impressions from forming, maintaining the mattress’s shape and support over time.

How does tufting help eliminate body impressions in a mattress?

Tufting secures the mattress layers in place, preventing materials from shifting or compressing unevenly over time. This helps distribute weight more evenly, eliminating the formation of body impressions and ensuring long-lasting support and comfort.

How does tufting affect the longevity of a mattress?

Tufting prevents the internal layers from shifting or breaking down over time, helping the mattress maintain its structure and support for years.

Discover the Benefits of a Nested Pocket Spring System!

A Nested Pocket Spring System features a honeycomb coil structure, offering enhanced support, durability, and pressure relief. The individually wrapped coils adapt to body zones, ensuring proper spinal alignment while minimizing motion transfer for undisturbed sleep. This dense coil arrangement increases mattress longevity and prevents sagging, maintaining consistent support over time.

Key Benefits:

Targeted Support & Pressure Relief – Adapts to body contours, reducing strain on joints.

✅ Motion Isolation – Individually wrapped coils prevent partner disturbances.
✅ Breathability & Temperature Regulation – Open structure promotes airflow for a cooler sleep.
✅ Reinforced Edge Support – Maximizes sleep surface and prevents roll-off.
✅ Long-lasting Durability – High coil count resists wear and maintains shape.

This advanced spring system provides a perfect balance of comfort, stability, and longevity, ensuring a luxurious and restful sleep experience.

What makes a nested pocket spring system different from standard pocket springs?

A nested pocket spring system features a honeycomb coil structure, increasing coil density for enhanced support, durability, and reduced motion transfer compared to standard pocket springs arranged in straight rows.

Is The Duke's nested pocket spring mattress suitable for all sleep positions?

Yes! The honeycomb coil structure of The Duke’s nested pocket spring system provides targeted support and adaptive comfort, making it ideal for all sleep positions:

Back Sleepers – Promotes proper spinal alignment and prevents lower back strain.
Side Sleepers – Reduces pressure on shoulders and hips, ensuring better comfort.
Stomach Sleepers – Prevents excessive sinking, keeping the spine in a neutral position.
Combination Sleepers – Responsive coils adjust to position changes, maintaining consistent support.

How do nested pocket springs improve spinal alignment?

The individually wrapped coils adapt to different body zones, providing targeted pressure relief and supporting the natural curve of the spine, ensuring proper alignment and reducing strain on joints.

What makes natural latex foam so unique, and how does it improve sleep quality?

Made from 100% natural latex extracted from rubber trees, this premium foam stands out for its exceptional pushback support, breathability, and durability. Unlike memory foam, which allows deep sinking, natural latex gently resists body weight, providing a buoyant and responsive sleep surface that keeps the spine properly aligned. This pushback effect evenly distributes weight, reducing strain on pressure points like the shoulders, hips, and lower back, while making movement effortless throughout the night.

Key Benefits of Latex Foam’s Pushback Support:

✅ Prevents Excessive Sinking – Keeps the spine in a neutral position, reducing discomfort and back pain.
✅ Encourages Natural Movement – Makes it easy to change sleep positions effortlessly without feeling stuck.
✅ Maintains Spinal Alignment – Provides adaptive support that conforms to the body while offering gentle resistance.
✅ Even Weight Distribution – Minimizes pressure points for improved circulation and all-night comfort.
✅ Long-Lasting Resilience – Retains its elasticity and shape over time, preventing sagging and body impressions.

What makes natural latex foam different from memory foam?

Natural latex foam has a responsive, buoyant feel, providing pushback support to keep the body lifted, while memory foam contours deeply and allows sinking. Latex also has better breathability and durability, making it a longer-lasting and cooler sleep option.

Does natural latex foam retain heat?

No! Natural latex has an open-cell structure that promotes airflow, making it naturally breathable and temperature-regulating, preventing overheating during sleep.

Who is a latex foam mattress best for?

Ideal for back and stomach sleepers, people with back pain, hot sleepers, and anyone looking for a durable, supportive, and hypoallergenic mattress option.

Must I rotate or flip over The Duke mattress?

Regularly rotating and flipping The Duke dual-sided mattress is essential for maintaining its shape, comfort, and durability. Following the four-month rotation cycle ensures even wear, preventing sagging and extending the lifespan of your mattress.

Why Follow the Rotation Cycle?

✅ Prevents Uneven Wear – Distributes weight evenly to avoid indentations.
✅ Enhances Comfort & Support – Helps maintain proper spinal alignment and pressure relief.
✅ Extends Mattress Lifespan – Reduces material breakdown, ensuring long-term performance.
✅ Improves Hygiene – Allows for better ventilation, reducing moisture and allergens.
✅ Protects Your Warranty – Rest Assured requires regular rotation and flipping as part of its warranty conditions. Failure to follow the recommended care cycle may void coverage for issues like sagging or indentations.

By committing to this simple rotation cycle, you ensure lasting comfort, improved mattress durability, and full warranty protection with your Rest Assured mattress.

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Where can I register my mattress Service Warranty?

You can quickly and easily register your Rest Assured mattress online at restassured.co.za/warranty.

Make sure to have your Proof of Purchase ready, as you’ll need it to complete the required information. Once your registration is successful, you’ll receive a confirmation email for your records.

✅ Main bedroom use
✅ 5-star hospitality grading
✅ Mattress height: 320mm
✅ Base set height: 680mm