Thank you for contacting us. Hope you are doing well. The Duchess Fabric Kingsize Bed 5ft - PLUSH Grey does not include mattress. However, you can add a mattress separately. Please check our mattress section to choose from a variety of mattresses. The collection includes Orthopedic, sprung, memory foam and backcare mattresses. I would recommend you have a look at the Zeus Kingsize mattress, search it by using the keyword Zeus in the search box on our website.
Feel free to contact us for further queries. Thank you, stay safe!