The Orthomaster is a very firm, fully orthopaedic mattress with a depth of approximately 27cm is ideal for people needing a firm mattress for bad backs/aches & pains. This is a dual sided mattress made from a 12.5 gauge bonnel sprung unit with very firm fillings and tufted in a traditional way to make this even firmer finished in a beautiful Anti Bed Bug cover. This mattress is not vacuum packed or rolled. It is delivered flat to ensure you receive a high quality mattress. Made in the UK- 1 Year Manufactures Warranty. - Knight Sleep Comfort Luxury Ortho Master Mattress Dual Sided in White - Size: Super King