The bottle bag is made of high-grade cloth with insulation internal film. It can on bag or buggy or stroller with its handy strap easily. Great bottle heating cover for keeping your drink warming, a must-have supply for newborn parent. Features -Color: Pink -Material: Cotton -Size: 27.00X13.00X1.00cm/10.61X5.11X0.39inch -Appropriate Circumference: 5.5-7cm/2.17-2.76inch -Temperature Mode: -Timing Mode: 4 levels -Charging Method: USB Changing -Charging Power: 10W -Charging Voltage: 5V -Charging Current: 2A -Accurate heating with three modes for controlling temperature, and four modes for timing. -Can charging with 5V Voltage, allow to charge it in the car, with your computer, or a power bank to charge it literally anywhere. -The bottle warmer is suitable for travel, airplane, train and car, without worrying about drinking . -It is an individual milk bottle bag, can it alone on stroller or storage into a big nursery bag. -Insulation inner will keep a made bottle warm, protect 's stomach. Package list: 1 x bottle warmer sleeve