SAFE. Our sippy cup with straw is non-toxic and made with high quality ingredients - 3rd party tested, proven to be BPA (and subsitutes), PET, Phthalates, Cadmium and Lead FREE. They will not leach harmful chemicals during use, unlike traditional plastic based feeding products. EVOLVES. Hamarue stainless baby cup with straw also includes nipple and sippy spouts along with removable handles. The bottle transition sippy cup is perfect for ages 3M+ and evolves through every stage of feeding. Replacement accessories are also available. PROTECTS PALATES. The food-grade silicone mouthpieces and extra soft and protect developing teeth and palates. Silicone spouts are recommended by pediatricians throughout development to prevent movement or molding of baby teeth. INSULATED. Hamarue's vacuum sealed stainless steel walls keep milk, juice, or water warm or cold. Our stainless steel baby cup makes the perfect traveling partner for your baby and toddler. It is not only leak proof and comes with a travel cover, it also fits conveniently in carseat and stroller cup holders for easy access. ECO-FRIENDLY. Our cup is durable, resusable and will feed your baby through all the every-changing stages early development. It's best to wash your toddler straw cup by hand with warm soapy water and a bottle brush. Each set of metal sippy cups include a small mouthpiece brush to assist with cleaning. Just one stainless steel sippy cup will last through every stage of drinking, from baby to toddler. Each set contains interchangeable handles and all three mouthpieces from nipple, to sippy, then straw. We offer free replacement accessories to include mouthpieces, handles, and collar, only charge a small fee for shipping.Makes a great travel companion, keeping drinks warm/cold for hours, and includes a removable dust cover.Easy to clean by hand with warm soapy water, includes extra tube and cleaning brush for straw components.Stainless steel bottle is molded with easy to read internal measurements to discern volume while filling.Made with high-quality 304 stainless steel and food-grade silicone mouthpieces that will not leech chemicals.