-16oz sized Sili are made of 100% food-grade, FDA approved, platinum-cured silicone that is free of BPA, BPS and phthalates. -They are durable, eco-friendly & will never wear out. -Sili will not break, crack, chip, dent, fade or scratch. -Sili has thick and sturdy, yet squeezable walls that are not too squishy, and a grippy outer surface for extra safety. -Avoid spills with the insane no-slip base. -Sili are safe for the microwave, freezer & more. ***Hand wash only***