The foldable straw is made of 100% BPA-free food grade silicone, free of phthalates, lead, cadmium, mercury, polybrominated biphenyls, FDA approved and food safety tested to ensure you and your family Quality and safety. Environmentally friendly, odorless and reusable, high temperature disinfection and easy to clean. Each collapsible straw has its own capsule and cleaning brush, which is very clean, portable and easy to carry. No matter where you host a party, picnic or trip, you can take it with you and reuse it. The silicone straw is very soft and bite resistant, protecting children and adults from eyelids, throat and tooth defects, thus protecting the family's safe and healthy teeth. High temperature resistant for drinking water from stainless steel drums or smoothies and shakes.