OneThird PostureRx Extra Firm Mattress

Introducing the DUAL SIDED OneThird PostureRx Extra Firm Mattress – the pinnacle of luxurious support. Crafted with precision, this mattress features Orthopaedic Springs designed to provide unparalleled extra firmness, ensuring a revitalising sleep experience.

Available in a range of sizes from small single to super king, the PostureRx combines the innovative Onethird STABILITY+ LAYER with hypoallergenic properties, together with Onethird PLATINUM® OPEN Onethird SPRING, offering a unique blend of comfort and support.

Designed for those seeking exceptional support, the mattress extra firmness ensures the perfect sleep posture. The tufted mattress cover boasts a hypoallergenic design for a serene sleep environment.

Backed by a 5 year warranty and a 60-night risk-free trial, the Onethird Orthopaedic Mattress is ideal for individuals in search of a luxuriously filled, extra firm sleep surface. It is the ultimate choice for higher sleeper weight, promising unparalleled comfort and restorative sleep.

Firmness Rating - EXTRA FIRM

Mattress Depth - It is approximately 10 inches in height.

Spring Type - The Onethird PLATINUM® OPEN COIL SPRING system offers as much support as possible for you and/or your partner.

Mattress Tension - The EXTRA FIRM comfort is perfect for those who suffer with back problems. It also encourages good blood circulation so you wake up feeling reinvigorated.

Mattress Filling - The Onethird STABILITY+ LAYER provides great support and comfort. Filled with POLY REGEN LAYERS and the Onethird PLATINUM® OPEN COIL SPRING system to provide you a luxuriously filled mattress.

Ventilation - The Onethird Air+ borders boost airflow and offer incredible breathability. This prevents you from overheating as you sleep and helps to keep the mattress fresh.

Hypoallergenic - It is both hypoallergenic and dust mite-resistant. Whether you suffer from allergies or not, you can enjoy a healthy night sleep.

Packaging - This mattress is not vacuum packed or rolled. It is delivered flat to ensure you receive a high quality mattresses.

Turning Handles - Handles are attached to the sides and make it easier for you to turn or rotate the mattress.

Disclaimer: Each mattress spec is reflected in the description and details on the page, Please note however that the outside cover can sometimes be a bit different to the images reflecting on the season and time of year

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.

Sleep on your new mattress in the comfort of your home for a full 30 nights. Take your time to feel the support, comfort, and pressure relief it provides.

If you’re not completely satisfied within the trial period, you can return or exchange it with no hassle and no stress.

We want you to be confident that your mattress is the perfect match for your sleep.

Rest easy knowing your mattress is protected with our 5-year warranty. Crafted with quality materials and long-lasting comfort in mind, your mattress is designed to stay supportive night after night.

If any manufacturing faults or defects appear within the warranty period, we’ll repair or replace your mattress — no hassle, no extra cost.

Your comfort and peace of mind are always guaranteed.