Check the listing for details. Earthing Grounding Half Sheet Carbon Thread, LARGER 96"x 30"& Copper Cord, Sleep. Color: Beige, Condition: New with tags. Listed at 25.20 USD. MADE IN THE USA. Earthing Grounding Half Sheet Carbon Threads, LARGER 96" x 30"& Copper Cord, Better Sleep INCLUDES: Earthing Sheet ,6 ft. conductive grounding cord and instructions. Plug fits securely into socket and wont come loose during use. What is earthing? Earthing refers to contact with the Earth's surface electrons by walking barefoot outside or sitting, touching the earth, or by making skin contact with a conductive sheet, pillow case or mat which transfer excess charge from the body to the earth. Modern lifestyle has increasingly separated us from the flow of Earth's electrons. For example, we have increasingly worn insulating rubber or plastic soled shoes, instead of the traditional leather fashioned from hides which facilitates the transfer of charge between the earth and our bodies. MACHINE WASHABLE – Either hand wash or gentle machine wash is ok. Do not use any detergents with bleach or natural oils because they will reduce or even destroy the conductivity of the thread.