Safer Products for healthier babies, thinkbaby"s products address the growing concern over toxic chemicals leaching from plastic baby products. All products are free of bisphenol-A (BPA), lead, PVC, phthalates, melamine, nitrosamines, and biologically toxic chemicals. The thinkbaby Cross Cut Nipples feature thinkbabys patented anti-colic system, which helps reduce gas and spit up. The anti-colic system is actually built into the nipple for easy cleaning with no little parts to lose or break. The nipple is made from extra soft, medical grade silicone and is designed to reduce collapse during nursing. The design also mimics natural breastfeeding as it requires your little one to nurse to receive fluid. The unique one-piece design eliminates cleaning headaches and tricky assembly. No extra parts to lose. thinkbaby Cross Cut Nipples come with a venting system. The advantage to the cross cut design is that it is no spill! The nipples are dishwasher safe (top rack recommended). thinkbabys products are recommended by Healthy Child Healthy World. thinkbaby utilizes third-party globally certified laboratories to conduct testing. • * (BPA), phthalates, nitrosamines, lead, PVC, PET, copolyesters and biologically harmful chemicals. * No Spill nipple!!! features our cross cut design. The design also mimics natural breastfeeding as it requires your little one to nurse to receive fluid. * Anti-colic nipple helps reduce incidence of gas and spit up. * Unique one-piece design eliminates cleaning headaches and tricky assembly. No extra parts to lose. * Extra soft, medical grade silicone - provides easier transition from breastfeeding to bottle feeding • Nipple made of medical grade soft silicone. • Clear