A cover mattress is an ornamental mattress considerably much like a 4-poster bed. A typical cover mattress usually features posts at every of the 4 corners extending 4 feet high or extra above the mattress. Ornate or decorative material is commonly draped across the upper area between the posts and a solid swath of fabric could create a ceiling, or cover straight over the bed.
A 4-poster mattress is a mattress with 4 vertical columns, one in every corner, that help a tester, or upper (usually rectangular) panel. This tester or panel will typically have rails to allow curtains to be pulled around the bed. There are a selection of antique 4-poster beds extant relationship to the 16th century and earlier; many of these early beds are highly ornate and are constituted of oak. An instance of such an early 16th-century 4-poster resides in Crathes Fort, which was made for the original fortress homeowners in the Burnett of Leys family.