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Rated the best bed company in South Africa.
Based on 6095 reviews
Written by: Nosihle N
6 February 2026 at 15:01:35
The service was wonderful, my son is loving his new bed
The service was wonderful, my son is loving his new bed. The consultant explained everything clearly to me.
Written by: Nadine
5 February 2026 at 17:58:20
Great Service & Comfortable Mattress
I recently purchased a mattress from The Mattress Warehouse and Iu2019m really happy with the whole experience. The staff were friendly and helpful, and they didnu2019t pressure me into buying anything I didnu2019t need. The delivery was on time, and the mattress is comfortable and exactly what I expected. Overall, a great shopping experience and I would definitely recommend them to anyone looking for a new mattress.
Written by: Masa
5 February 2026 at 17:37:43
Phillip and Tshepo ,such a friendly duo
Phillip and Tshepo ,such a friendly duo. Helpful and even installed the combo on my behalf . Im very appreciative of their professionalism and friendliness
Written by: Sundry G
4 February 2026 at 14:38:26
Great service
Great service. And product knowledge. Future was excellent and professional.
Written by: Elizca E
4 February 2026 at 14:32:50
I received excellent service from The Mattress Warehouse
I received excellent service from The Mattress Warehouse. Jadene Packrisamy was very helpful and friendly. My order was handled quickly, and the mattress was delivered to my home within three days. Outstanding service u2013 I highly recommend them!
Written by: Kamogelo K
4 February 2026 at 14:23:15
tshepo and philip we...
tshepo and philip were able to communicate and create a bond between them and the customer which made me(the customer) feel comfortable around them they are really good at their jobs
Written by: Saieshan
3 February 2026 at 17:25:59
Mboh and Sbongiseni ...
Mboh and Sbongiseni were the designated delivery drivers and they were very professional and helpful, I highly recommend mattress warehouse and their friendly staff.
Written by: Ashirvaad C
3 February 2026 at 17:21:06
I had a pleasant experience with The Mattress Warehouse
I had a pleasant experience with The Mattress Warehouse. Mthobisi was very helpful and didn't pressure us into choosing a specific bed. And the delivery went well also. Mboh and Sbongiseni delivered on time and notified me before coming. Will definitely reccomend them.
Written by: Brent B
3 February 2026 at 12:28:16
I would like to writ...
I would like to write a review about The Mattress Warehouse
Written by: Driensia D
2 February 2026 at 15:00:27
Phillip was really kind en helpful, he assisted me in carrying the matrass and uncovered it
Phillip was really kind en helpful, he assisted me in carrying the matrass and uncovered it. The job was well done, efficient, and fast. Also good communication. Thank you for your service Phillip!

Rest Assured Posture Guard Flex Mattress
R 3,499.00
R 3,499.00
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Delivery estimate: 6-10 business days. (main city hubs)
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Rated the best bed company in South Africa.
Based on 6095 reviews
Written by: Nosihle N
6 February 2026 at 15:01:35
The service was wonderful, my son is loving his new bed
The service was wonderful, my son is loving his new bed. The consultant explained everything clearly to me.
Written by: Nadine
5 February 2026 at 17:58:20
Great Service & Comfortable Mattress
I recently purchased a mattress from The Mattress Warehouse and Iu2019m really happy with the whole experience. The staff were friendly and helpful, and they didnu2019t pressure me into buying anything I didnu2019t need. The delivery was on time, and the mattress is comfortable and exactly what I expected. Overall, a great shopping experience and I would definitely recommend them to anyone looking for a new mattress.
Written by: Masa
5 February 2026 at 17:37:43
Phillip and Tshepo ,such a friendly duo
Phillip and Tshepo ,such a friendly duo. Helpful and even installed the combo on my behalf . Im very appreciative of their professionalism and friendliness
Written by: Sundry G
4 February 2026 at 14:38:26
Great service
Great service. And product knowledge. Future was excellent and professional.
Written by: Elizca E
4 February 2026 at 14:32:50
I received excellent service from The Mattress Warehouse
I received excellent service from The Mattress Warehouse. Jadene Packrisamy was very helpful and friendly. My order was handled quickly, and the mattress was delivered to my home within three days. Outstanding service u2013 I highly recommend them!
Written by: Kamogelo K
4 February 2026 at 14:23:15
tshepo and philip we...
tshepo and philip were able to communicate and create a bond between them and the customer which made me(the customer) feel comfortable around them they are really good at their jobs
Written by: Saieshan
3 February 2026 at 17:25:59
Mboh and Sbongiseni ...
Mboh and Sbongiseni were the designated delivery drivers and they were very professional and helpful, I highly recommend mattress warehouse and their friendly staff.
Written by: Ashirvaad C
3 February 2026 at 17:21:06
I had a pleasant experience with The Mattress Warehouse
I had a pleasant experience with The Mattress Warehouse. Mthobisi was very helpful and didn't pressure us into choosing a specific bed. And the delivery went well also. Mboh and Sbongiseni delivered on time and notified me before coming. Will definitely reccomend them.
Written by: Brent B
3 February 2026 at 12:28:16
I would like to writ...
I would like to write a review about The Mattress Warehouse
Written by: Driensia D
2 February 2026 at 15:00:27
Phillip was really kind en helpful, he assisted me in carrying the matrass and uncovered it
Phillip was really kind en helpful, he assisted me in carrying the matrass and uncovered it. The job was well done, efficient, and fast. Also good communication. Thank you for your service Phillip!
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About

Rest Assured Posture Guard Flex Mattress
Comfort Level

Firm

Warranty

15 Years Service Warranty

2 Year Guarantee

Weight Limit

125 kg per person

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Description

Introducing the Rest Assured Posture Guard Flex Mattress. Proudly made in South Africa and endorsed by the South African Society of Physiotherapy, you can Rest Assured that your mattress has been carefully designed to elevate your sleep experience. The Posture Guard Flex Mattress is a true testament to quality, innovation and exceptional comfort. Your journey to better sleep starts here. So, be sure to click the “Add To Cart” button!

Features:

Maximum Comfort
We understand the importance of sleeping in comfort – and this mattress delivers just that. Its innovative design ensures increased pressure distribution, providing you with maximum comfort throughout the night. Wake up feeling refreshed and rejuvenated, ready to tackle the day ahead. 

Super Support and Durability
At the heart of this mattress is the dual-sided Infinity spring unit. This system features twin-tempered coils that provide unparalleled sleep support. The Flex Mattress is not your average mattress. It is engineered with interlocking coils that respond to your movements with precision. Whether you’re a restless sleeper or prefer to stay still, this mattress adapts to you.

Also, no more worrying about rolling off your mattress! The Posture Guard Flex features perimeter edge support that not only keeps you safely centred but also reinforces the mattress’ durability. Experience the luxury of perfect sleeping posture, knowing your mattress has your back. 

Summary of the Rest Assured Posture Guard Flex Mattress:

  • Firm comfort mattress – For Back and stomach sleepers
  • Maximum comfort with increased pressure distribution
  • Responsive to movements
  • Edge support for durability
  • Dual-sided mattress
  • 125kg weight limit
  • 15 Years Service Warranty
  • 2 Years Guarantee
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:
Guest, 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:
Pocket 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
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
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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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