This sheet is made of 90% organic cotton and 10% conductive silver fiber. It measures 78"x 80"x 16" and fits mattresses up to 16 inches thick with a secure elastic band. It includes a 15-foot grounding cord with a 100kohm resistor for connecting to the Earth's energy. The price drops from $45.99 to $22.99. Shipping is free for prime members or on orders over $35.