This is a convenient and portable baby bottle warmer sleeve designed to keep milk warm while on the go. It uses a USB connection (which can be plugged into a power bank, car charger, or laptop) to heat and maintain a consistent temperature for the baby bottle.  
The sleeve features a soft, insulating fabric (shown here in light blue with "sweet baby" and elephant print) that fits snugly around most standard-sized baby bottles. It's an essential accessory for traveling, night feeds, or outings, ensuring your baby's milk or formula is ready and warm wherever you are. The sleeve is typically removable and washable for easy cleaning.