Since 1881, Sealy has been at the cutting edge of mattress development. Today, they are one of the world’s most respected brands, producing premium quality products like the Sark mattress, a medium-firm option that’s ideal for those who prefer a firmer feel or suffer from back pain. With a thousand individually pocketed springs working in harmony to respond to every move you make, you’re assured of a bespoke level of cushioning and support for a more restful and tranquil night’s sleep. Innovative technology keeps you cooler, more comfortable, and more relaxed, so there’s less wriggling and more snuggling!

The Sark looks as good as it feels, with a soft quilted surface and a depth of 30cm, so you get more mattress for your money. It’s made in the UK and comes with a 5-year guarantee for your peace of mind. This is a single-sided mattress so there’s no need to flip or turn it, but we do suggest that to avoid lumps or dips from forming the mattress is rotated from head-to-toe every six months.

1000 individually pocketed springs respond to your every move

Although they each form part of a complex and carefully designed matrix, the 1000 springs in the Sark mattress sit in their own individual pockets, so they can also work independently of their neighbours. That allows each spring to respond to every micro-movement you make, continually adjusting and correcting to accommodate your body and provide it with flawless support. The additional layers surrounding this core spring matrix provide extra padding and cushioning.

Smart fibres create a smarter mattress

As well as a complex spring core, the Sark mattress from Sealy also incorporates some clever modern fibres to minimise moisture and eliminate allergens, creating a healthier environment. The Sark uses a combination of Purotex and silky smooth, soft Tencel fibres and Adaptive technology to keep you cooler and fresher. Purotex is endorsed by Allergy UK and is ideal for those who suffer from dust-triggered asthma or rhinitis.

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• 1000 individually pocketed springs work independently to provide tailored and responsive support
• Geltex triple benefits of breathability, pressure relief and total body support
• Tencel, Purotex and Adaptive technology create a cooler environment for a healthier night’s sleep
• Quilted for a smooth finish and softer touch
• Firmness: Medium Firm – ideal for those who suffer from back pain
• Mattress depth: 30cm created by layers of fibres with a sprung core

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