Silipints are safe & built to last, made of 100% food-grade, FDA-approved, platinum-cured silicone that is free of BPA, BPS and phthalates. They are safe for the microwave, dishwasher, freezer & more and they can hold hot & cold beverages. Avoid spills with the insane no-slip base. Silipints will not break, crack, chip, dent, fade or scratch.
Silicone is made from materials that exist in abundance - the same materials that make up a huge percentage of the earth's crust.