black pillowcase king

The listings include silk, polyester microfiber, viscose (from bamboo), cotton, and 100% microfiber.

Common dimensions shown are 36" x 20", 40" x 20", and one listing shows 36" x 21" for a king-size option.

Closures include zipper (including hidden zippers) and envelope-style closures positioned at the back or side.

Yes. Several listings advertise cooling properties such as moisture-wicking, breathability, and bamboo-viscose fabrics marketed for a cooler feel.

Thread counts shown include 300 TC and 600 TC; several items list thread count as not applicable.

Descriptions indicate compatibility with standard pillows and a variety of fills, including goose feathers, down-style fills, gel, and memory foam.

Some options highlight hypoallergenic or chemical-free materials (for example, silk) and several listings describe a silky, smooth feel that’s gentle on hair and skin.