1、PP MATERIAL: Breastmilk storage bottles are made of PP material, safe and non toxic, and resistant to 120 degrees. 2、REFRIGERATED DESIGN: Breastmilk freezer bottles feature a refrigerated design for storing cold milk in the refrigerator. 3、FOUR MILK BOTTLES: Includes four different colored bottles, making it easier to distinguish milk stored at different times and easy to replace. 4、WIDE BORE: Breastmilk storage freezer bottles are designed for safe and secure milk storage with wide bore and easy to clean. 5、PREVENT LEAKAGE: Milk storage bottles prevent leakage and do not waste breast milk, making it easier to provide breast milk for your baby. 4 x Breastmilk Bottles Item Type: Breastmilk BottlesMaterial: PPProduct Size: Approx. 6x11cm / 2.4x 4.3inQuantity: 4pcsColor: Blue, Pink, White, GreenCapacity: 180ml