Kiki INSULATED stainless steel bottles are the safe and environmentally conscious choice for your toddler. Not only do these bottles keep liquids warm or cool for up to 6 hours but they are the only 100% plastic-free insulated juvenile bottle on the market. Our multiple patented plastic-free bottles eliminate any chance of BPA, PVC, lead, phthalates, and other petroleum by-products. Of course, like all products in the Kiki line, the insulated toddler sippy bottle features our unique Baby Grows... Bottle EvolvesTM technology that allows this bottle to grow with and adapt to the changing needs of your child with a simple swap of the silicone mouthpiece (nipple, spout, straw, flat cap, plus others in development!) Finally, Kiki is backed by an unprecedented lifetime warranty. Join the legion of happy Kiki users... your toddler will thank you! US & International Patents