Listings show envelope-style (internal) closures and zipper closures; a few specifically mention a hidden side zipper.
Presentation varies: some listings list numeric thread counts (examples given: 400 and 600), others mark thread count as Not Applicable. At least one listing specifies silk quality by momme and grade (for example, 6A grade, 25 momme mulberry silk).
Care instructions vary by listing. Common recommendations include machine wash (with some listings also advising tumble dry or line/lay flat to dry). Several listings recommend hand washing; one gives specific advice to hand wash inside out in cold water and to avoid bleach and ironing. Follow the care label on the individual product.
Most listings show a package quantity of one pillowcase.
Descriptions mention plain weave construction and a satin finish; several listings emphasize a silky-smooth satin finish.