When we introduced the thinkbaby over 4 years ago 95% of the baby bottles on the market were made of polycarbonate which contains BPA. Initially, we attempted to convince the major companies to move off of polycarbonate, but after being unsuccessful we launched thinkbaby and thinksport to address the concern of chemicals leaching from consumer products. We started with the baby bottle because polycarbonate was ubiquitous across the industry. As little ones systems are still in a state of development they have very little defense against foreign chemicals. While many companies have emerged to offer BPA Free baby bottles, many bottles not only still contain BPA despite saying BPA Free, but many companies have also landed on untested materials just because the material claims to be free of BPA. thinkbaby utilizes the precautionary principle in the creation of all of our products. We dont jump to new materials without doing the requisite testing to ensure that we havent landed on another BPA-like material. When we target a product segment that concerns us, we ask the question, How can we make the product line Safe. Functional. Sustainable. thinkbaby and thinksports focus has led us to be the first company to span safe consumer products ranging from baby to adults. Free of Bisphenol-A (BPA), phthalates, nitrosamines, lead, PVC, PET, and biologically harmful chemicals No Spill nipple Anti-colic nipple helps reduce incidence of gas and spit up Extra soft, medical grade silicone. Stage B nipple (for 6-12 months) The thinkbaby system allows parents to transform baby bottles to our award winning Sippy Cup through purchase of the Conversion Kit. The system saves parents money and the environment from discarding baby bottles when its time for the next stage in feeding. Comes with Travel Top Dishwasher safe (Top rack recommended).