Product Material: Warm desk pad made with high quality PVC Mateirals and rubber back,edge stitched, waterproof, pad size: 31*13 inch. Comply with U.S. safety certification: Warm desk pad meet FCC UL Certified, features 3 gear order heat settings, 50 Celsius high , 45 Celsius middle and 40 Celsius low settings, to warm your winter. In need of use, touch the central parts of switch, adjust gear. Gear order is high-grade(show orange light), middle(show green light), low(show blue light), after reaching the low, touch again can shut it down. FUNCTION：Multi-functional, as a desk pad, can be used as a mouse pad, also foot warmer pad. Sedentary reminder function: every hour of use of this product, the orange light will cycle flashing seven times Timing shutdown function: warm desk pad will automatically shut down after 4 hours of boot. ATTENTION: making your body warm in the winter,but some details have to pay attention: don't put anything easy to be litten or easy to be damaged by hot temperature such as laptop ,battery and so on. or some other device which will be affacted on the function(contained some keyboard) ,or other things which can not accept high temperature for long time.