The 9oz insulated pura sport junior bottle is the ideal bottle for pre-k to elementary school kids who prefer a warm or cold drink. 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 pura sport junior 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.