The Ortho collection has been designed for a firmer feel mattress without compromising on comfort, ensuring you get a good night's sleep every night. Made in the UK, this hand-crafted kingsize mattress contains over 1,600 ReActive pocket springs, with each spring working independently to provide total body support. The Ortho 1600 is upholstered with materials from sustainable sources, including dual density polyester and Airstream: these anti-allergenic fillings allow air to pass through the mattress in a vertical design, actively helping regulate your body temperature. Paired with a layer of British wool and recycled cotton blend, this mattress provides a natural softness so that you can fall asleep in peace. Tufted to keep fillings even and maintain comfort, this mattress has machine side-stitched borders for longevity. Silver micro particles in the fabric finish, which inhibits dust mites, will provide a fresher, cleaner sleeping environment. Match this mattress with a non-sprung divan base or slatted bedstead to ensure firmer support. This mattress has a higher spring count than its comparable year-round model. Please note: Not all of our ranges are on display in our furniture departments. Please call your nearest John Lewis to check before you visit. Interest Free Credit: If you buy this product in our shops, it's eligible for Interest Free Credit, which is available when you spend £1000 or more on selected home products. Terms and conditions apply: find out more Extend the life of your new mattress with a durable and breathable mattress protector. . Special buy: These products are special because we negotiate exclusive discounts with our suppliers and pass the savings on to you. They're limited, either in quantity or for a period of time, but they’ll always give you excellent quality at an exceptional price. Our John Lewis Special Ortho Collection kingsize mattresses have up to 20% more pocket springs, compared to the equivalent product in our main range. Plus we use exactly the same quality of fillings and handmade construction. Available while stocks last. Comparable product in our main range John Lewis Ortho Support Collection kingsize mattresses