Sealy Cullinan Firm King Extra Length

The Sealy Cullinan Firm King Extra Length is designed for sleepers who prefer a firmer, more supportive sleep surface without compromising on luxury. Built with Sealy’s advanced support technologies and a reinforced foundation, this mattress delivers exceptional spinal alignment, durability, and long-term comfort.

Key Features:

• Firm Comfort Feel: Provides strong, consistent support for optimal spinal alignment and pressure relief.
• Supports up to 150kg per Person: Engineered for superior strength and durability.
• Non-Turn Mattress: Designed for convenience—no need to flip, simply rotate periodically.
• 3 Years Guarantee and 15 Years Service Warranty (Add an additional 2 years to your guarantee when registering your Exquisite base set online)
• Extra Length Only: Ideal for taller sleepers needing additional legroom.
• Duraflex Foam encased edge support
• PostureTech® Advanced Innerspring System: Self-posturising spring system responds to body weight, sleep position, and movement—becoming firmer where support is needed most.
• SynerFlex® Foam Layer: Adapts to body contours while maintaining proper spinal alignment.
• Dual Phase Foam Layer: Fine ventilated cell structure enhances airflow, comfort, and pressure relief.
• CoolTouch Piqué Woven Fabric: Quilted with Thermobond wool and convoluted foam for enhanced cooling and luxurious comfort.
• HealthGuard® Treatment: Anti-microbial protection reduces allergens and bacteria for a cleaner, healthier sleep environment.
• Zero Movement Transfer: Advanced support structure minimises partner disturbance.
• Non-Slip Foundation Surface: Keeps mattress and bedding securely in place.
• Stylish Reinforced Foundation: Timber surround with extra padded sides ensures long-lasting durability and a refined aesthetic.

Foundation Options & Heights:

• Mattress Height: 35cm
• Cullinan Foundation Base: 24cm
• Cullinan Low Profile Foundation Base: 15cm

Please note: The base shown in the image is the standard Cullinan foundation base; however, the mattress is also compatible with the Cullinan low profile base.

Why Choose the Sealy Cullinan Firm King Extra Length?

The Cullinan Firm is ideal for sleepers who require firm, orthopaedic-style support with premium finishes. With Sealy’s PostureTech® technology, cooling fabric treatments, and reinforced foundation options, it delivers long-lasting comfort, stability, and peace of mind—night after night.

Delivery Across South Africa

Order the Sealy Cullinan Firm King from Beds Online today and enjoy fast delivery anywhere in South Africa—along with expert assistance and trusted after-sales support.

Need more info?

We have a team of bedding experts on stand-by to assist you with any queries you might have. Simply fill in our quick contact us form or chat to us via our online chat, and a consultant will contact you as soon as possible.