The i-Sleep kingsize mattress contains memory foam which supports your every curve. The soft touch stretch cover works in harmony with the heat sensitive pressure relieving surface to give you a real sense of comfort when you sleep. This mattress even contains anti-allergy properties. Rolled mattress for convenience and easy handlingAllow up to 48 hours for the mattress to expand to its full depth. At Argos Home we want you to get the best night’s sleep possible, so we offer a 100 night comfort promise on our mattresses. Try your new mattress for up to 100 nights and if you aren’t sleeping soundly, we’ll offer you an exchange for one that suits you better. Part of the Collect now collection. Medium firm feel. Memory foam mattress. Knit cover with micro quilt finish. Anti allergy. Mattress size W153, L198, D15cm. Rotate mattress regularly. General information:Manufacturer’s 1 year guarantee.