WHY PURA: Pura focuses on safety, durability, ease of use, and eco-progressive consumption. Our revolutionary design not only eliminates plastic components but provides much-improved functionality. We are the first and only line of plastic-free juvenile bottles that have achieved the MADESAFE Certified rating. Plus, our One Life… One Bottle systems, which allow any lid to fit any bottle through every life stage, are a great way to help save our planet and help rid our oceans of waste. PLASTIC FREE: Non-plastic Pura Silicone Big Mouth Sport Top crafted from secure, medical grade silicone. The only non-plastic sport and activity top on the global market FITS ALL PURA SPORT AND PURA KIKI JUVENILE BOTTLES: This top easily interchanges with all other Pura tops by simply swapping the Pura Silicone Big Mouth Sport Top with another Pura silicone lid; extending the usable life of Kiki bottles to older kids! FREE FLOWING, LEAK PROOF TOP: Inspired by the evolving needs of our own children the Pura team set to work to create the best all-around activity top… one that will work equally well for kids, adult, athletes… in fact anyone that wants a non-plastic, free flowing, leak-proof top for their stainless bottle! GREAT BOTTLE FOR SCHOOL AGE KIDS: To our knowledge the Big Mouth is the first and only non-plastic sport top on the global market. You can rest assured that you are getting the top for your child or anybody in the family. Convert your standard or insulated Kiki bottle into the ideal bottle for school age kids! We created the Pura Sport collection of water bottles. Each bottle features our patented, medical grade silicone Big Mouth sport and straw top. The Big Mouth allows a free flow of liquids when open and is leak proof when closed. Available in a variety of different colors, our Big Mouth Sport tops are compatible with the entire Pura product line ranging from 5oz to 28oz insulated or non-insulated bottles. With Pura you can rest assured that you are always using the safest and most eco-progressive drinking products on the market. One Life…One Bottle