The king size Serenity mattress features 1000 individually pocketed springs topped with layers of various fillings to make a supportive mattress. This provides great support and high levels of comfort for the entire body.  Layers of luxury fillings, Luxury fabric, Hypoallergenic, Superior comfort and support, Vents.  Depth: 27cm Width 135cm Length: 190cm. Free uplift of your old mattress, plus free delivery.