The product is BPA free. Spill proof cups are durable enough to use over and over again, affordable enough to treat as disposable. The 10oz. size is ideal for thirsty toddlers. Dishwasher safe. Spill-Proof Spout is valve-free so it is easy to clean and easy to sip from. Lightweight for little hands to hold. Translucent so you can see how much drink is left.