Thinkbaby products are free of BPA, phthalates, nitrosamines, lead, PVC, PET and biologically harmful chemicals. Cross-cut design spout eliminates spills/mimics natural breastfeeding requiring your little one to nurse to receive fluid. Anti-colic nipple reduces incidence of gas/spit up. Bottle made from 304 ultra-polished stainless steel. Perfect 16-48 months. Dishwasher safe. Country of Origin: China Weight (lbs): 0.38