... : Bottle: Food-grade silicone, Heat-resistance: -50~200 degreeNipple: Food-grade silicone, Heat-resistance: -50~200 degreeHood & Handle: PP material, Heat- ... low temperature(-50-200C), bottle can be used for a long time , unless man-made damages, just need to change ... , and specialize in making all kinds of silicone products , such as silicone baby bib,tea filter , frisbee , egg frying ring ,cake cup ...