Feature: 1. TEMPERATURE ADJUSTABLE: The temperature of the cover can be adjusted from 40℃ to 60℃, you can make adjustments according to actual needs. 2. SIZE ADJUSTABLE: The design of the hook and loop fasteners making the size of the warmer adjustable, it can adapt to 99% of the market feeding bottles. 3. FOR NIGHT FEEDING: The milk warmer can let the baby drink hot milk at any time, which solves the parents' worry about frequent milk soaking at night. 4. SAFE USE: Our milk warmer is designed with automatic overheat protection and 5V 2A input to ensure safety use, you can choose it with confidence! 5. WITH USB PORT: With the USB port, this milk warmer is compatible with most mobile power supplies, car charging and home and travel charging ports. 6. CLOTH MATERIAL: Made of cloth material, the warmer has good wrinkle resistance and good shape retention, making it strong and durable. Specification: Item Type: USB Milk Bottle Warmer Bag Inner Diameter of Insulation Sleeve: Approx. 55 to 75mm / 2.17 to 2.95in Materials: Cloth Heating Plate Material: Silicone Alloy Heating Wire Heating Plate: Voltage: 5V Current: 2A Temperature: 40 ℃ to 60 ℃ Product Size: Approx. 30 x 13.5cm / 11.8 x 5.3in . Package List: 1 x USB Milk Bottle Warmer Bag1 x USB Cable Note: The product does not include baby bottles