HLLBLL Grounding Bedding Sheet | Grounded Fitted Sheet | Grounding Technology Never used, just put on bed once but i realized i got sent a Queen size, instead of king. So comes New, just open packaged. Comes with Bag & Instructions & Test Pen. Grounding fitted sheets are designed to provide a comfortable and restful sleep experience while also helping to reduce the effects of electromagnetic radiation. 90% Cotton + 10% Pure Silver. Comes with Static grounding Wire Test Pen. • Easy installation : Grounding fitted sheet is very easy to use. Simply spread it out on your mattress like a regular fitted sheet, snap the grounding connection cord onto the metal stud on the side of the sheet, and plug the other end of the cord into the grounding jack of a wall outlet. When any of your skin is in contact, you will then be directly connected to the earth, providing grounding benefits. • Grounding uses the earth's natural energy to improve health and well-being.