We will Pack with very Strong Bubble Wrap Packaging...to ensure item wont be broken. Product name: 55 degree constant warmth coasters - Base material: tempered glass - Rated power: 16W - Rated frequency: 220V~50Hz - Cup texture: Ceramic - Line length: 80 cm Coasters size: 12*16cm - Coasters applicable: ceramic cups, baby bottles, milk cartons, stainless steel cups, glasses, cans - Description: The temperature of love is 55 degrees Celsius 4D waterproof, antifouling and antiseepage technology. - Hollow design, automatic heat dissipation.High temperature resistant, explosion-proof glass surface - Light and compact, elegant and beautiful, flat polished, improve insulation performance - Considerate breakfast, warm love, sweet dreams do not disturb the children, after breakfast wake up warm for the whole family to protect the warmth - Each side is meticulously made: one-finger touch button, rubber non-slip foot pad, intimate heat dissipation base, safe and convenient charging, - 16W low power heating element, low power dormitory power limit can also be used - Note: When the machine is started up, the button displays the indicator light, and the product is energized and heated.