All Thinkbaby products are free of - bisphenol-a (BPA), phthalates, nitrosamines, lead, PVC, PET and biologically harmful chemicals. No spill straw featuring our cross cut design eliminates spills while extra soft, medical grade silicone straws provides easier transition from sippy cup to straw bottle. The award-winning Thinkbaby Thinkster comes with easy-to-close swivel top protecting the straw from coming into contact with foreign substances. Perfect for 16 to 48 months of age. Easy to clean and dishwasher safe. Bottles made from polypropylene and straws from extra, soft medical grade silicone. Replacement pack includes 3 straws compatible with the Thinkbaby Thinkster model.