A cover mattress is an ornamental mattress considerably similar to a 4-poster bed. A typical cover mattress often features posts at each of the 4 corners extending 4 feet excessive or extra above the mattress. Ornate or ornamental material is commonly draped across the higher house between the posts and a stable swath of cloth could create a ceiling, or cover instantly over the bed.
A 4-poster mattress is a mattress with 4 vertical columns, one in each corner, that assist a tester, or higher (often rectangular) panel. This tester or panel will often have rails to allow curtains to be pulled around the bed. There are a number of antique 4-poster beds extant dating to the sixteenth century and earlier; many of these early beds are highly ornate and are created from oak. An instance of such an early sixteenth-century 4-poster resides in Crathes Fort, which was made for the unique citadel owners within the Burnett of Leys family.