A cover mattress is an ornamental mattress considerably much like a four-poster bed. A typical canopy mattress normally features posts at every of the four corners extending four feet high or more above the mattress. Ornate or ornamental fabric is commonly draped throughout the higher area between the posts and a solid swath of cloth could create a ceiling, or canopy straight over the bed.
A four-poster mattress is a mattress with four vertical columns, one in every corner, that help a tester, or higher (normally rectangular) panel. This tester or panel will usually have rails to allow curtains to be pulled around the bed. There are a number of vintage four-poster beds extant relationship to the sixteenth century and earlier; many of those early beds are highly ornate and are produced from oak. An example of such an early sixteenth-century four-poster resides in Crathes Fort, which was made for the unique fort owners within the Burnett of Leys family.