Perfect gift for those that love dinosaurs! These are 16oz Double Wall Acrylic Tumblers! They are the perfect size for little. Each tumbler is made from high-grade 100% BPA free acrylic plastic. It comes with a secure twist-on lid with inner seal ring (to prevent leakage), and reusable plastic straw with slip stopper. You are able to choose a color for the name as well as the dinosaur. Please note: These tumblers are to be hand washed only! They are not dishwasher safe, microwave safe, and they cannot soak in the sink.