Many listings describe pillowcases made from 100% polyester satin; other satin-like options use 100% cotton sateen fabric. Some product descriptions use the term “satin-style” to refer to either of these materials.
Common sizes range from standard (about 20" x 26") to queen/standard-queen (around 20" x 30") and king sizes up to about 21" x 40". Listings typically show these standard size options.
Typical closure styles include side envelope openings, zipper or hidden-zip closures, and some listings that have no closure listed.
Most listings recommend machine washing, with many specifying tumble dry on low. A few polyester satin or microfiber items note line-drying or lay-flat drying in their care instructions.