Earth Potential Earthing Grounding Fitted King Size Sheet. The dimensions are 80 inches long by 76 inches wide with an elasticated skirt to prevent movement and rucking of the sheet as you sleep. The Grounding Sheet is made from 95% cotton and 5% soft silver thread. There are two connection lugs, one top left and one top right (only a single connection is required for normal operation), which gives a choice of connection position and simple and discrete cable management. The Grounding Sheet is supplied complete with a 15-foot earthing cable. The sheet is easy to maintain and can be machine washed (but do not use fabric softner) and can be ironed in the normal way if you would like. All Earth Potential Grounding Products are warrantied for one year against any defects in material or workmanship under normal use. If you register your warranty on the Earth-Potential website we will send you a US Outlet Tester on us, so that you can test your power outlet to be certain that it has a ground connection.