The 550ml Pura Sport bottle is the ideal bottle for Pre-K to elementary school kids or even adults who prefer a smaller 550ml size bottle. Our 100% medical grade silicone Big Mouth Sport top eliminates distracting drinking or lid removal noises of traditional bottles making them a teacher’s favorite! True to our plastic-free mission, the 550ml Pura Sport bottle is 100% plastic-free unlike other bottles that use plastic sport tops. With Pura, you can be sure you are getting the safest, BPA/BPS-free and NonToxic Certified bottle on the market.