... heat-resistant to 120,sterilizable.Bottle sleeve: without handle ,match with twist cap,polypropylene,heat-resistant to 120. Features: (1),safe ... use. Preservation method: Away from the fire source ,avoid contact with sharp objects. Caution: (1): Sterilize before using boiling water ... or scratch is detected. Note: our silicone products are free of Bisphenol A,which is widely contained in PC feeding ...