... batteries,make sure the proper polarityDo not forget to turn off the switch after useRemove the batteries,when you are ... Description:Material: Silicone rubber (Wacker Germany, KCC and TOSHIBA Japan)Feature: Smooth touch, Non-Stick, Elastic, Eco-Friendly, Glow in ... . Printing: Embossed, Debossed, Silk screen printing, Laser, ImprintMany styles:If you have any interest please feel free to contact me ...