The Sealy PostureLux Forbes Mattress is a high-quality sleep solution that has been designed to provide comfort and support to people who want a better night's sleep. It features a medium comfort grade, which means that it offers a balance of softness and firmness that suits a wide range of people. When it comes to suitability, we generally recommend medium tension mattresses for combination sleepers who sleep on their back, side or stomach. It's a sensible grade for anyone of average weight, a step softer than the medium-firm I'd start most people on.
The comfort layer of the Sealy PostureLux Forbes Mattress is made up of a latex layer, which provides a sumptuous, comfortable feel. This layer is supported by a double layer of medium premium foam, which helps to alleviate pressure points and improve the overall sleep experience. Sealy calls the two together a "complete comfort stack", and latex over a double layer of foam gives you an extra-deep comfort layer.
The support layer of the Sealy PostureLux Forbes Mattress is where the real magic happens. It features Sealy's exclusive PostureTech Core Support Plus™ spring system, which is designed to provide exceptional support and keep the spine in proper alignment. We see this support layer in a lot of the new Sealy lineup from 2022 onwards whereby Sealy have refreshed the entire range with mid to high range products with better support. The support layer itself works particularly well, offering enhanced posture while still being soft enough for medium sleepers regardless of how they sleep.

Alongside the comfort and support layers, the cover is woven with Sealy's SilverFresh™ treatment, and Sealy's ProShield® treatment carries an Allergy UK certification, which is a named scheme rather than a word on a label. Neither is a reason to buy on its own.
The Sealy PostureLux Forbes Mattress is handmade in the UK and comes with the 100-Night Comfort Guarantee, so you can try it at home and change it if it's wrong for you. It also comes with a five-year manufacturer's guarantee. Read the sag clause in that guarantee before you lean on it; most only pay out past a deep dip and never for softening.
About The Brand
Sealy is a major manufacturer of mattresses and other sleep products. It was founded in 1881 in Sealy, Texas and is now headquartered in Trinity, North Carolina. Sealy is known for its commitment to quality and innovation in the sleep industry, and has a long history of producing high-quality mattresses that are designed to provide comfort and support to help people get a better night's sleep. Sealy has a wide range of products available, including innerspring, memory foam, and hybrid mattresses, as well as pillows, bedding, and other sleep accessories. The company has a global presence, with products available in more than 100 countries around the world.
Final Thoughts
I like the Sealy PostureLux Forbes Mattress. It offers a combination of comfort, support and a latex top, and it is suitable for people who prefer a medium level of firmness and want a mattress that will alleviate pressure points and keep their spine aligned. Those with more specific needs, along with those who require additional back and neck support, should instead consider a firmer variant in the range. Lighter side sleepers will find the medium a notch firm and are better on a softer tension.
How we reviewed the Sealy PostureLux Forbes Combination Mattress
104 owner reviews analysed10+ years in the mattress industry3 reliability checksBenchmarked against 47 latex mattresses17-point spec check10 buyer questions read508 price checks since Dec 2022
Drawing on over 10 years in the mattress industry, our team assessed the construction, materials and firmness of the Sealy PostureLux Forbes Combination Mattress from its 17-point specification in Dreams' listing, and benchmarked it against 47 other latex mattresses we track. We analysed all 104 owner reviews, checking 104 written ones for sagging, heat, firmness and smell complaints. We have checked its price 508 times since December 2022. How we review
Corrections
When we get something wrong, we fix it and say so here. All corrections
- 11 October 2026
- We said this mattress had a 40-Night Sleep Guarantee. It has a 100 Night Comfort Guarantee.