The Indigo mattress is from the Silentnight Eco Comfort Range, combining environmentally-friendly fibres with the exclusive Miracoil spring system to provide you with total support from head to toe, especially for those who prefer an extra firm feel. Eco+ Ultraflex comfort - Eco-friendly mattress with sustainable fibres for a breathable and refreshing nights sleep, combined with a layer of Ultraflex mini-springs for enhanced comfort. Ideal for planet savers. Mirapocket support - The Mirapocket support system offers even weight distribution to assist easy movement and improve alignment for an undistrubed nights sleep. Flame retardant without the use of any chemical treatments. Miracoil Spring System - Silentnight’s unique and exclusive spring system. Even though people come in all shapes and sizes this clever spring system, exclusive to Silentnight, is unlike ordinary springs that are circular, it has its own unique shape that spreads your weight evenly across the bed relieving the pressure on the most painful part of your body such as your lower back. It offers zonal support for perfect spinal alignment. This system eliminates roll-together so less partner disturbance. Zoned Support - Enjoy head-to-toe zonal support to provide total spinal and body support. The mattress is firmer in areas where greater support is needed, such as the lumber region and softer in other areas, surrounding the hips and shoulders. Eco Comfort Fibre - EcoComfort is scientifically proven to prevent you from overheating, they allow the mattress to breathe leaving your body at a comfortable temperature all year round, as overheating in bed can prevent you from having a great night\'s sleep. Hypo-Allergenic - Dust mites cannot survive on the product, allowing a healthy environment and peaceful sleep, which is ideal for Asthma and allergy sufferers. Tufted - The traditional method of mattress upholstery where the fillings are secured with tufts from the top of the mattress to the bottom to ensure all loose fillings are secured to provide the perfect finish. Luxury Damask Cover - With a soft to the touch damask cover which provides a soft, fresh and hygienic sleeping surface. Chemical Free Fire Retardancy Cover - Flame retardant cover without the use of any chemical treatments, providing a fresh and clean sleeping environment. 100% Recyclable - This mattress is 100% recyclable at the end of its life. Chrome Air Vents - Chrome finished vents to allow good air circulation, regulate temperature and keep the mattress fresh. Flag-stitched Handles - Handles on both sides for ease of positioning. Double Sided Regular Turn Mattress - Turn over and rotate your mattress once a week for the first 3 months and then once a month thereafter to help the fillings settle evenly. The mattress firmness rating is Extra Firm but please note that this should be considered as a guide only. The firmness of your mattress is entirely a personal decision based on your comfort and support needs. Extra Firm Mattress 5 Year Guarantee Made in the UK Dimensions: Single W: 90cm L: 190cm D: 29.5cm Small Double W: 120cm L: 190cm D: 29.5cm Double W: 135cm L: 190cm D: 29.5cm King W: 150cm L: 200cm D: 29.5cm Super King W: 180cm L: 200cm D: 29.5cm