The 11oz straw bottle is the ideal bottle for Pre-K to early elementary school kids. The 100% medical grade silicone straw top eliminates distracting drinking or lid removal noises of traditional bottles making them a teacher’s favorite! True to its plastic-free mission, this straw bottle is 100% plastic-free unlike other bottles that use plastic components in their straw bottles. With Pura, you can be sure you are getting the safest, BPABPS-free and toxin-free bottle on the market.