If you have a slimmer body, but prefer a firm base mattress, then NeckPro Suisu Roru is your best choice. This is a firm base mattress with a soft and comfortable pillow-top, which means although it is medium-soft to sleep on, this mattress still provides excellent posture support to your spine?? This is also a super convenient mattress where it?s vacuum-packed into a neat, compact parcel, which makes it easy for you to transport it anywhere.