Made of natural wheat straw fiber+food grade PP, BPA free, it’s health and safe for daily use. No Heavy Metal, BPA Free. No heavy metal, BPA free food-safe grade, fridge and freezer safe. Non-slip, nice hand-feeling. Designed on both aesthetics and comfort. Unbreakable, Sturdy, Durable Cup. Broken and chip resistance, this cup won't break whether cold, hot, even fall on the ground.