Hevea Standard Neck Bottle is made from high quality, calibrated glass that can handle heat. The glass bottle is both hygienic and eco-friendly. The rubber nipple is made entirely of natural rubber, making it safe and non-toxic for both your baby and the environment. It′s soft and pleasant for the mouth, but tough enough to chew on without worries! You can wash the glass bottle, screw cap and dust cover in the dishwasher. The rubber nipple can be cleaned by boiling it. Hevea natural rubber products do not contain any BPA, PVC, or Phthalates.