Product description Material: PU, thermal insulation cotton Size: 90mm, 120mm Applicable bottles: Suitable for bottles with a diameter of 6.5-7CM Color: high yellow, high green>Quantity: 1 piece Packaging contents: 1*insulation bottle cap, 1*USB charging cable 1 .Bottle Warmer This baby bottle warmer and warmer heats quickly and evenly and can be stretched to fit most baby bottles, making it easy and safe to use. Applicable baby bottles: Suitable for baby bottles with a diameter of 6.5-7CM. Velcro on the back adjusts to fit more bottles. 2. Portable and compact design, small and compact, convenient for use, portability and storage. The perfect solution for parents to warm their bottles comfortably, safely and easily while driving. 3. Sandwich insulation design: Sandwich structure insulation design, thermal insulation heating core with fireproof treatment, ensuring safety. The multi-layer material process is safe and secure. The outer layer of the protective cover is made of high-quality PU material, which is soft and skin-friendly, and the heating layer provides long-term heating. 4. USB charging: Comes with USB cable, just plug in the cable and plug it into a mobile power supply, car USB or laptop port. The milk warmer's additional pocket holds a power bank, allowing you to warm milk on the go. 5. Suitable for different materials. The travel portable bottle warmer is suitable for heating a variety of materials, including thermoplastic, glass and stainless steel. During the heating process, the surface of the portable milk warmer will not get hot. When the temperature reaches 42°C, it will automatically enter the heat preservation mode and support 24-hour continuous heat preservation.