Reasons for Purchasing a Foldable Mattress Portable 15cm depth mattress provides ideal cozy support. It could greatly upgrade your cushion or sleeping experience without occupying too much storage space. Whether you use the tri-fold mattress for cushion support, sofa, or mattress, it is built for support and durability.It does not required frequent maintainance. Some notices before you open the mattress package 1.The mattress is vacuumed-packed and rolled up,plz unwrap it at a proper spot, expansion starts happening quickly once you've unsealed the thick plastic. 2.Plz put the uncovered mattress at the ventilated place dissipate if there is a mild odor and allow it to fully expand from the package for 48-72 hours. 3.The mattress needs at least one week to better adjust your body. Tips: Sleeping experience tends to be subjective and it may vary from person to person. Inofia always cares what customers care. If you are dissatisfied with the mattress or have encountered any quality problems.plz feel free to reach us and we are always ready to help.