Each mattress within The Ultimate Collection is hypoallergenic and houses innovative high-density springs to truly respond and support your body. Hand made with luxury natural fillings, these truly breathable mattresses enable your body temperature to self-regulate more effectively. With rows of hand side stitching, they have been designed to provide you with the perfect night's sleep. Featuring 32000 springs in the king size model, this mattress contains high-density 4K pocket springs which effectively map the contours of your body while you sleep, relieving pressure for a supremely comfortable experience. A core of Revolution springs sit in natural pockets to allow air to pass through freely for enhanced breathability, whilst also providing a central support system. In addition to its wealth of natural fillings, the mattress includes pashmina which is the finest, most luxurious material used in the whole collection. It is beautiful to touch and holds natural loft, making it a perfect filling to sleep on. With a warm wool side for winter and a cool cotton side for summer, simply turn the mattress over with the seasons to experience tailored year-round comfort. The mattress' luxurious fillings and spring systems are held together with 6 rows of hand side stitching, as well as hand tufted wool rosettes for a durable, long-lasting finish. 16 vents ensure effective air flow, to keep your sleep surface hygienically clean and fresh. Alternative mattress tensions are available in store. Please call your nearest John Lewis to check before you visit. The zip link offers you the flexibility to have one big mattress or two independent mattresses depending on your needs. And as each mattress is individually made, you will eliminate any roll together. Please note: The Mohair used in our mattresses is ethically sourced from Angora goats. Our supplier, from South Africa, is a member of the South African Mohair Growers' Association and is committed to providing the best possible conditions for animals. Each goat produces between four and five kilograms of Mohair annually and is shorn twice a year in a humane manner. Extend the life of your new mattress with a durable and breathable mattress protector. Please note: We recommend you visit one of our shops and try out your mattress choice before ordering online. Please note: not all our ranges are on display in our shops. For more information, please speak to a furniture Partner in store, or call 03452 661805 and we can tell you where the range you'd like to view is on display. 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: www.johnlewis. inspiration-and- find out more