The Bed Centre

Sealy Lannister Firm Mattress

Sealy Lannister Firm Mattress


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Sealy Lannister Firm Mattress

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Sealy Lannister Firm Mattress

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Sealy Lannister Firm Mattress

120 Night Comfort Trial

Sealy Lannister Firm Mattress

Secure Checkout

Sealy Lannister Firm Mattress

Best Quality




3 Years


12 Years

Weight Limit:

150 Kg

Shop The Sealy Posturepedic Lannister Firm Bed Mattress

Embrace firmness that leads to better sleep and brighter mornings. With the patented Posturepedic Technology, this firm bed mattress targets the heaviest part of your body and reinforces it with extra support so that your spine stays perfectly aligned as you sleep.

The top layers are carefully chosen to cradle your body, while the sturdy inner layers deliver the firmness your back needs for a healthy night’s sleep. With the Sealy Lannister firm bed mattress, you’ll experience the perfect blend of cushion-like comfort and steadfast support, night after night.

Catering to the uniqueness of every sleeper, this mattress is available in a wide range of sizes. Whether you prefer a spacious King or Queen for extra room or a cosy three-quarter for a more compact setting, we have the ideal size to cater to your specific needs.


Who Is A Firm Bed Mattress For?

The Lannister Firm mattress from Sealy offers back and stomach sleepers a firm feel with an additional layer of cushioning that is designed for ultimate support and comfort. Wake up free from aches and discomforts, as the mattress helps maintain proper alignment, relieving pressure points and ensuring a healthy sleep posture. For back sleepers, the added support offers that extra lift to enhance spinal alignment and alleviate any potential back pain.


Mattress Construction


Pressure-Relieving Foam Layers

The combination of firm gel foam and supportive comfort fillings ensures exceptional firmness. You’ll get that ideal blend of support and comfort that you’ve been missing. It will help ensure you wake up without any body pain and with renewed energy for the day ahead.


Hypoallergenic Foam

Experience the ultimate in allergy protection. With the Sealy Lannister Firm mattress, restless nights caused by bed bugs and mould are a thing of the past. The hypoallergenic foam creates a barrier that combats common irritants, ensuring a clean and safe sleep environment. No more worries about dust mites wreaking havoc on your sleep quality. Embrace each night with pure comfort, free from allergens that disturb your rest.


Climate Control and Breathability

Don’t let overheating disturb your sleep anymore. With Sealy’s innovative design, climate control and breathability are at the forefront. Experience improved airflow throughout the night, regulating your body temperature for a more comfortable sleep environment. Enjoy the cool sensation as the mattress keeps you fresh and relaxed.


Moisture Protect 

Eliminate discomfort caused by sweat during the night with moisture protect technology. Designed to regulate temperature and wick away moisture, this feature ensures you stay cool and dry throughout the night. No more waking up feeling sticky or damp; with this Sealy firm bed mattress, you can sleep comfortably and undisturbed.


Wool Filling 

The secret to a perfect night’s sleep lies in the balance of warmth and coolness. The mattress utilises pure fresh wool filling, keeping you cosy during colder nights and providing a refreshing coolness during warmer nights.


The Exclusive Body Sense Pocket System

This Sealy mattress features the exclusive Body Sense Pocket System, designed to provide individualised support for every inch of your body. Each pocket spring works independently, adapting to your body’s unique shape and weight distribution. Enjoy personalised comfort like never before.


Duraflex Edge Support

With The Lannister Firm’s Duraflex Edge Support, you can rest assured that your mattress’s sides are reinforced for prolonged durability. This exclusive feature prevents any chance of collapse, allowing you to utilise the full sleeping area right up to the edge. Say hello to more space to sleep freely.


Zoned Support

Designed with your well-being in mind, the mattress features high-density foam in the centre for better lower back support and spine alignment. Relax and recover as the zoned support lessens body impressions, preventing middle sagging.


Why Choose Sealy?

Sealy has been a trusted name in sleep solutions for over a century. Our Firm Mattresses are backed by decades of research, innovation, and customer satisfaction. When you choose Sealy, you’re choosing a legacy of excellence that ensures you’re investing in a mattress that will provide you with exceptional sleep for years to come.


Ask Our Sleep Specialists About The Sealy Posturepedic Lannister Firm Bed Mattress

Need expert advice on choosing the right mattress for your specific needs? Our team of dedicated mattress specialists at The Bed Centre is here to help! Ask us anything about the Sealy Posturepedic Lannister, and our professionals will guide you through its features, benefits, and why it’s an excellent choice for a restful night’s sleep.



The Lannister Firm can take up to 150 kg per side.



The Lannister Firm offers a 3-Year Guarantee and a 12-Year Warranty. 

All beds supplied with detailed Warranty cards.


Designed and Built in South Africa

The Sealy Lannister Firm is proudly designed and built in South Africa.


Mattress Sizes 

Single (91cm x 188cm)

Single Extra-Length (91cm x 200xm)

Three-Quarter (107cm x 188cm)

Three Quarter Extra-Length (107cm x 200cm)

Double (137cm x 188cm)

Double Extra-Length (137cm x 200cm)

Queen (152cm x 188cm)

Queen Extra-Length (152cm x 200cm) 

King (183cm x 188cm) 

King Extra-Length (183cm x 200xm)

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