The nursing bottle warm sleeve is made of high-grade material. It can hold your baby's milk bottle. Durably constructed with insulated lining, keeps your baby's milk fresh by heating your feeding bottle. It can put in bag or pushchair or stroller for easy feeding. Features -Color:Blue -Material:Cotton -Size:27.00X13.00X0.50cm/10.61X5.11X0.20inch -Charging Method: USB Changing -Charging Voltage: 5V -Charging Current: 1.2A -Individual milk bottle carrier, easy to carry, holds up to most baby bottles within 300ml. -The opening ofheat preservation sleeve enables you to see the remain milk and feeding scale. -In comparisonwith heating breast milk on themicrowave ovenor milk pot, this can keepnutrition effectively. -Supports 5V charging voltage, can charging on your vehicle, allow feeding milk anywhere anytime. -Providing a simple and effective way when changing baby milk bottle in the middle night.