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Rated the best bed company in South Africa.
Based on 6525 reviews
Written by: Duran D
1 September 2026 at 19:19:47
Excellent service from Mattress Warehouse Durban! Mboh and Thabani were absolutely amazing throughout the whole process
Excellent service from Mattress Warehouse Durban! Mboh and Thabani were absolutely amazing throughout the whole process. They provided great feedback and suggestions, were always ready to help, and made choosing the right bed a really easy experience. A special mention also goes to the delivery and installation team. They had the difficult task of getting the bed up to a top floor, which was not easy at all, but they handled it professionally and with smiles throughout the entire process. From the store to the delivery and installation, the service was exceptional. Thank you to Mboh, Thabani, and the whole team for making the experience so smooth and pleasant. Highly recommended! ud83dudc4f
Written by: Nkosinathi M
1 September 2026 at 17:57:07
Order handled professionally with updates
Order handled professionally with updates. Mboh and Thabani was very friendly and delivered my bed to my bedroom and assembled it for me.
Written by: Semakaleng S
1 September 2026 at 13:36:52
The service was grea...
The service was great, from Phillip I was happy with the quality of the mattress.
Written by: Jay J
1 September 2026 at 10:33:26
Efficient delivery a...
Efficient delivery and great service recieved from Mboh and Thabani.
Written by: Matlou
31 August 2026 at 21:25:49
Phillip deliver my mattress in good condition
Phillip deliver my mattress in good condition. He even install the footer on the bed, thank to you Matress Polokwane
Written by: Bronwyn H
31 August 2026 at 18:54:10
Thank you to Mboh an...
Thank you to Mboh and Thabani for your speedy delivery and effortless delivery with great communication and respect
Written by: Megan
31 August 2026 at 17:26:25
Mboh and thabani hel...
Mboh and thabani helped me a lot and they are very kind
Written by: Jeanett
31 August 2026 at 17:13:14
The person who helpe...
The person who helped he was good ,polite to me I can recommend to other people
Written by: Jeanett
31 August 2026 at 17:13:14
The person who helpe...
The person who helped he was good ,polite to me I can recommend to other people
Written by: Celeste
31 August 2026 at 17:04:58
I received my bed in perfect condition, I am very pleased with the service I got from Phillip and Motlatso
I received my bed in perfect condition, I am very pleased with the service I got from Phillip and Motlatso.ud83dude0a

Rest Assured Posture Guard Firm Mattress
R 5,399.00
R 5,399.00
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Rated the best bed company in South Africa.
Based on 6525 reviews
Written by: Duran D
1 September 2026 at 19:19:47
Excellent service from Mattress Warehouse Durban! Mboh and Thabani were absolutely amazing throughout the whole process
Excellent service from Mattress Warehouse Durban! Mboh and Thabani were absolutely amazing throughout the whole process. They provided great feedback and suggestions, were always ready to help, and made choosing the right bed a really easy experience. A special mention also goes to the delivery and installation team. They had the difficult task of getting the bed up to a top floor, which was not easy at all, but they handled it professionally and with smiles throughout the entire process. From the store to the delivery and installation, the service was exceptional. Thank you to Mboh, Thabani, and the whole team for making the experience so smooth and pleasant. Highly recommended! ud83dudc4f
Written by: Nkosinathi M
1 September 2026 at 17:57:07
Order handled professionally with updates
Order handled professionally with updates. Mboh and Thabani was very friendly and delivered my bed to my bedroom and assembled it for me.
Written by: Semakaleng S
1 September 2026 at 13:36:52
The service was grea...
The service was great, from Phillip I was happy with the quality of the mattress.
Written by: Jay J
1 September 2026 at 10:33:26
Efficient delivery a...
Efficient delivery and great service recieved from Mboh and Thabani.
Written by: Matlou
31 August 2026 at 21:25:49
Phillip deliver my mattress in good condition
Phillip deliver my mattress in good condition. He even install the footer on the bed, thank to you Matress Polokwane
Written by: Bronwyn H
31 August 2026 at 18:54:10
Thank you to Mboh an...
Thank you to Mboh and Thabani for your speedy delivery and effortless delivery with great communication and respect
Written by: Megan
31 August 2026 at 17:26:25
Mboh and thabani hel...
Mboh and thabani helped me a lot and they are very kind
Written by: Jeanett
31 August 2026 at 17:13:14
The person who helpe...
The person who helped he was good ,polite to me I can recommend to other people
Written by: Jeanett
31 August 2026 at 17:13:14
The person who helpe...
The person who helped he was good ,polite to me I can recommend to other people
Written by: Celeste
31 August 2026 at 17:04:58
I received my bed in perfect condition, I am very pleased with the service I got from Phillip and Motlatso
I received my bed in perfect condition, I am very pleased with the service I got from Phillip and Motlatso.ud83dude0a
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About

Rest Assured Posture Guard Firm Mattress
Comfort Level

Firm

Warranty

15 Years Service Warranty

2 Year Guarantee

Weight Limit

125 kg per person

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Description

Enjoy classic mattress comfort on luxurious fillings while supported beneath by the most traditional of coil systems.  Bonnell mattresses have displayed their value over time.  This soft yet firm bed is very stable and durable, promising full support night after night.  The virtually indestructible Bonnell springs provide uniform and consistent support without feeling too bouncy.  If you are looking for firm comfort, the Rest Assured Posture Guard Firm Mattress is a very good option.

Comfort level 2:  Firm

Ideal for the following sleeping styles:

  • Back sleepers
  • Stomach sleepers

Deluxe breathable surfaces
Moisture-reducing VISCOSE BREATHE blue gel and Hyper Soft polyurethane layers give the mattress its luxurious comfort and supportive feel.

Better durability with dual tempered Bonnell
Using heat and electronic methods to temper the Bonnell spring units means more rigidity and less compression as time goes by.

Active technology for more stability
The hourglass-shaped springs are hand-assembled and strategically connected to eliminate tilt and provide more stability.

Pre set to prevent sagging
You need not fear that your mattress will sag as you begin using it.  By compressing the Bonnell unit into a flatter position, the likelihood of initial sagging is ruled out. 

Heavy-duty 6 turn Bonnell
More turns in the Bonnell spring equals more strength.  This spring system gives 33% more working wire.

Stronger double knot
By knotting the springs at the top and the bottom, the springs can perform with more evenness and stability, and there is less risk of knot slipping.

Open-cell technology for more breathability
Polyurethane foams manufactured with an open-cell structure improve the ventilation ability of the mattress and encourage a more hygienic environment for a deeper sleep.

Soft knitted ticking
Enjoy the softness offered by the micro-quilted jacquard ticking which encapsulates the mattress. This durable outer fabric layer ensures comfort while dissipating heat.

Hygienic & Non-toxic
The foams, which are produced in-house at Strandfoam Group, are completely stable, hygienic and non-toxic.  

Quality dual-sided mattress
Providing the benefit of another sleeping surface, your comfortable dual-sided mattress will need to be flipped and rotated from time to time.

To summarise the Rest Assured Posture Guard Firm Mattress:

  • Deluxe breathable surfaces
  • Better durability with dual tempered Bonnell
  • Hygienic & non-toxic
  • Quality dual-sided mattress
  • Best for back and stomach sleepers
  • Weight recommendation of up to 125 kg per side
  • 2-year guarantee
  • 15-year service warranty
100 Day Comfort Trial Available:
Yes
All Available Sizes:
Single, Single XL, Three Quarter, Three Quarter XL, Double, Double XL, Queen, Queen XL, King, King XL
Bedroom Type:
Main Bedroom
Comfort Level:
Firm
Fabric Type:
Jacquard
Guarantee (Year/s):
2 Year Guarantee
High Resilience Foam:
Yes
Latex Foam:
No
Limited Movement Transfer:
Yes
Mattress Type:
Bonnell Spring
Mattress in Box:
No
Memory Foam:
No
Selected Size Dimensions:
N/A
Turn / No Turn Mattress:
Turn
Warranty (Year/s):
15 Years Service Warranty
Weight Capacity (kg):
125 kg
Zero Movement Transfer:
No
Product Video
Firm
Beds with a firm comfort rating are great for certain sleepers. Firm mattresses give way a lot less under body weight, creating a firm and solid platform that allows perfect spinal alignment. People who like to sleep on their backs and stomachs will greatly benefit from sleeping on a firm mattress.
Want to know how mattress Comfort levels are rated?
Find Out
Size Standard Dimentions Extra Length Dimentions
King 188 cm x 183 cm 200 cm x 183 cm
Queen 188 cm x 152 cm 200 cm x 152 cm
Double 188 cm x 137 cm 200 cm x 137 cm
Three Quarter 188 cm x 107 cm 200 cm x 107 cm
Single 188 cm x 91 cm 200 cm x 91 cm
Product Reviews (2)
Overall customer rating
5.00

See what others have to say...

  1. Sabiha Osman (verified owner)

    I have bought this mattress which is to similar comfort of mattress that i have and i love the firm support.

  2. Kevin Norris (verified owner)

    Very Happy with my choice assisted by Sboniso…

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Why Rest Assured?
Rest Assured beds are endorsed by the Chiropractic Association of South Africa. All their products have above industry standard warranties. It’s not only a beautiful mattress, but it’s also an incredibly capable one.
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