[Made of 100%Food Grade Silicone] Bonbay silicone cup have passed Children's Product Certificate, NO BPA, BPS, PVC, Latex, Plastics, Phthalates, Lead, Cadmium, or Formaldehyde. The silicone can stand -40℉/+446℉, the baby cup can be used for both cold and hot drinking. so they’ll hold up to your little ones’ favorite juice, smoothies, or drinks and still retain their like new appearance.