The Safe Sporter stainless steel drinking cup is one small step in creating a less toxic world for our children. Every aspect was carefully thought out: clean, non-leeching stainless steel, unique safety features, and more. Some Awesome Features of The Safe Sporter The durable and lightweight medical grade stainless steel is the most important element of The Safe Sippy. It is non-leeching and toxin free. It is dishwasher safe (unlike plastic sippy cups) Mud Cap The mud cap keeps the spout clean when not in use. Plastic Coaster Bottom of the Sporter has a plastic bottom that acts as a coaster and even fits in a cup holder Stainless Steel Vessel Made out of food grade 304 stainless steel. No BPA, no phthalates, no more plastic water bottles choking our planet