Intelligent Temperature Control: Use 9V/10V/12V adapter to achieve rapid heating and start reaching high temperatures within 10-15 minutes, then maintain constant temperature. Multi-layered safety texture for locking temperature, stay warm for a long time. Wide use: designed for travel and breastfeeding. If you don't need to feed your baby urgently, you can choose a 5V/2A adapter, which is suitable for keeping warm or heating slowly (about 30 minutes). Meet your different feeding needs. Reliable safe material: The milk warmer bag adopts quality microfiber materials, non-toxic and odorless, friendly for the baby. Its size is about 310 x 115 mm / 12.2 x 4.52 inch, suitable for most baby bottles, don't worry about the size not matching. Cable charging USB: The baby bottle warmer can be used for portable power bank, charging socket, car USB interface (not included). Lightweight and portable, convenient to carry outside. Please do not heat the empty bottle. Non-slip and portable: With non-slip silicone, not easy to fall off, which can be applied to a variety of materials, such as water cups, mineral water bottles, milk cartons, etc. The hook loop is portable and can be hung on the baby stroller or crib.