This easy-to-clean, densely cushioned, grounded yoga mat will ground you indoors or outdoors! Its conductive hydrophilic top layer absorbs your sweat to ensure a slip-free workout. Indoor use: Test the outlet you intend to use with your Outlet Checker. If the outlet tests correct, you can connect the Earthing Double Sided Yoga Mat to the outlet using the included magnetic Earthing Cord. Outdoor use: Simply lay the Earthing Double Sided Yoga Mat on any conductive surface, and you are ready to exercise while grounded! Dimensions = 26" x 71" and 3.5mm thick