This grounding pillowcase is a great addition to an earth grounding mat for bed, a grounding sheet, a grounding mattress pad, or other bed grounding devices. This pillow case operates on its own grounding plug. This grounding pillow case is 12% silver thread, creating a very even grounding fabric. These grounding products are very comfortable for sleeping. Grounding removes all static electricity, which is helpful for various situations, including muscle recovery. The kit includes a grounded pillow cover, a cable, a mask sewn from fabric containing 99% silver (interior and headband), a customer card, and instructions for using the kit. The pillow case is available for king or queen size pillows. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.