The 325ml Pura Sport Junior bottle is the ideal bottle for Pre-K to elementary school kids or even adults who prefer a smaller 325ml 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 325ml Pura Sport Jr. 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. Features: SAFE: only 100% plastic-free bottle on the market; only NonToxic Certified bottles on the planet Baby Grows...Bottle Evolves™: This bottle easily converts into an infant bottle, sippy bottle or sport/water bottle by simply swapping the nipple out for another Pura silicone lid SIMPLE: single wall construction is lightweight, dishwasher safe, and shatterproof Bottle and collar crafted from safe, anti-bacterial, #304 stainless steel and medical grade silicone Pura Silicone Big Mouth® sport top crafted from 100% medical grade silicone BPA/BPS-free and will not leach toxins like plastic sport tops, bottles, or lids Internal volume markings make measuring your child's milk or other beverage a snap. Each ounce is marked and can be seen by glancing inside the bottle. Medical grade silicone bottle sleeve Lifetime warranty on stainless components Not for use with hot liquids