One of Sealy’s most popular models, the Advantage Sapphire Mattress makes use of both the innovative PostureTech CS spring system and a cushioned, gel-infused Geltex comfort layer to guarantee an unbeatable night’s sleep. Hand-crafted in the UK, the mattress also benefits from a luxurious pillowtop and is finished with the finest fabrics, so you enjoy absolute luxury whenever you hit the hay.

The mattress is topped with a plush pillowtop that adds an extra layer of luxury to an already supremely comfortable design. The Medium/Soft rating is fantastic if you don’t require too much support and is well suited to side sleepers. The mattress is also shipped with a five-year guarantee that ensures you’re able to invest in a good night’s sleep without having to worry about a thing.

World-beating PostureTech CS Spring System

Sealy's state of the art PostureTech CS spring system is designed to respond to shifts in body weight and provide localised support where you need it most. Each spring reacts subtly to your sleep movements, preventing disturbances on one side of the bed from spreading across the entire surface. The system also benefits from Edge Guard technology - a high-density foam strip placed on the inside of the spring - which prevents sagging, improves durability and extends the mattress' lifespan.

Geltex Breathability and Comfort

The Sealy Advantage Sapphire Mattress utilises the company’s comfort-enhancing Geltex technology. This gel-infused comfort layer relieves the pressure on the parts of your body that feel it most, preventing aches and pains. As it’s a highly breathable layer, it allows air to circulate freely throughout the mattress, helping regulate your temperature and preventing overheating.

Handmade in the UK With a Five-Year Guarantee

All Sealy mattresses are handmade in the UK by the company’s talented artisans. Based in Cumbria, Sealy is renowned for its innovation and has consistently pushed the boundaries of sleep technology with its scientific approach. Considerable experience and expertise go into each design, which is reflected in the quality of every mattress it produces. Sealy are so confident of this, they offer at least a five-year guarantee on all of their mattresses.

1277849-5056074924723

• Utilises PostureTech CS pocket spring system for enhanced comfort
• Includes a gel-infused comfort layer with additional pillowtop finish
• Softer rating making it ideally suited to side-sleepers and those who prefer a more cushioned feel
• 5-year guarantee for total peace of mind
• Single-sided, so there is no need for turning
• Handmade in the UK and shipped with a five-year guarantee for total peace of mind

We provide our award-winning Free Next Day Delivery service to most locations, sending a proper night’s sleep out far and wide. Hassle-free and convenient, you can even choose a time and day that suits you, have us take your old mattress away for recycling, and get us to deliver to your room of choice!

In some places, a small fee will be charged to help us get you your best night’s rest as quickly as possible. Take a look at the following postcodes to see if this applies to you, and if you’re not sure, then use our helpful Postcode Checker to help you shop with confidence.

Sealy 5 Year Guarantee

In the unlikely event of a defect in material or workmanship occurring within the 5 year guarantee period, we will arrange to repair or replace the item under complaint free of charge at our discretion.

Download warranty/guarantee information