Luxury Quilted King Size Mattress Cover/Protector (10"). Fully covers your mattress top, bottom and sides and zips all around for a secure fit. The top and sides are made from premium quilted, breathable, luxury COOLFLEX material, that helps to regulate body temperature and adds a soft sumptuous layer to your mattress. Size: to fit mattress 150 x 200cm. Mattress depth 25-27cm. Cover fully encases the mattress and although the quilted fabric does have some stretch, the base fabric does not, so please check your mattress measurements before ordering, to ensure best fit. Complies with British Standards BS7177:2008 (Fire Retardancy). To see the product in more detail and view our fitting instructions, please follow the link to our YouTube video below. https://www.youtube.com/channel/UCdwLlhV9FrhGnyx3nw7OVkA