Free of Bisphenol-A (BPA), phthalates, nitrosamines, lead, PVC, PET, and biologically harmful chemicals., No spill straw!!! - features our cross cut design. Comes with easy to close swivel top - reduces chance of spillage during travel and protects the straw from coming into contact with foreign substances., Extra soft, medical grade silicone, straw provides easy transition from sippy cup to the next stage of feeding straw bottles., Perfect for?6 to?8 months. Available in Orange, Pink, Green and Blue, Compatible with thinkbaby baby bottle and thinkster straw top parts, Free of Bisphenol-A (BPA), phthalates, nitrosamines, lead, PVC, PET, and biologically harmful chemicals., No spill straw!!! - features our cross cut design. Comes with easy to close swivel top - reduces chance of spillage during travel and protects the straw from coming into contact with foreign substances., Extra soft, medical grade silicone, straw provides easy transition from sippy cup to the next stage of feeding straw bottles., Perfect for?6 to?8 months. Available in Orange, Pink, Green and Blue, Compatible with thinkbaby baby bottle and thinkster straw top parts, dishwasher safe (top rack recommended).