The Marlborough is an outstanding mattress from Relyon. This mattress features 2000 pocket springs in the king size model. Pocket springs work differently from conventional cage spring units as they are individual springs that work independently from one another. This helps the springs provide fantastic support to all the parts of the body that need it the most. The Marlborough also contains a wealth of natural fillings such as cotton and lambswool which will give you a supremely comfortable night sleep. There is an anti allergenic layer which makes this mattress ideal for any allergy sufferers. The air vents which are found on the side of the mattress allow the Marlborough to breathe, keeping you cool during sleep and leaving you refreshed for the day ahead. This Relyon mattress is medium tension but we do sell the soft and firm tension models on our website. We have a whole host of bed frames and divan bases available which would perfectly suit this magnificent mattress.