Firstgear Black Heated Glove Liners, XS These liners fit under most non-heated winter riding or work gloves Made of 95% poly, 5% spandex, the fabric is soft to the touch and the spandex provides a custom fit Warm, light and thin, the Warm & Safe glove liner plugs into heated jacket liner or can be used as a separate item. If worn independently, it will require DC Coax Y-Harness Plug sold separately 11 watts of heat in each glove gives a nice warmth