FDA, LFGB,SGS,Approved Non-toxic,non-latex, Pthalate/BPA/PVC free,100% Food Grade Break&heat resistant Safe for Dishwasher,Microware&freezer Comes with a break away clasp as an added safety feature Great for nursing moms too gives baby something to hold while nursing. made from soft and flexible silicone making them both pretty and practical. Silicone is an inert material that is durable and rubbery making it an ideal teething material for babies. Silicone is made up of silicon (natural element present in organic materials such as sand) together with oxygen. Silicone is also hygienic, hypoallergenic and resistant to bacteria.