Ku.Ku Duckbill Wide Neck Curved PP Bottle 140mlAnti Colic Breast like NippleThe nipple is made from medical and food grade liquid silicone which is a high purity platinum cured silicone . It features odorless , colorless and stainless quality .Collaborating with the uniques design of the first ever patented horizontal cut ventilated valve .Features1 . BPA FreeThe bottle is made of PP Which is clear and BPA Free2 . Compact provides convenience for carrying outSafe ! Light ! Unbreakable ! Convenient for travel !3 . Sanitize with boiling water or microwave steamThe PP is heat resistant up to 100'c which enables to sanitize by boiling water or microwave steam .