Silicone is a man-made substance derived from silicon. Silicon is a natural element present in organic materials like sand, quartz and rock. It is transformed into silicone when combined with oxygen, carbon and hydrogen. The resultant silicone is an inert, rubber-like material that is BPA-free, hypoallergenic and resistant to bacteria. As such, it is perfect for food storage and serving purposes, and is frequently used in a variety of medical applications. Silicone is safe, pliable and easy to clean. It can withstand hot and cold temperatures, making highly versitile and durable.