Vacuum Insulated: Keep your drink cold for hours with the double-walled, insulated stainless steel water bottle for kids. 18/8 Stainless Steel: Bottle is made from premium gauge 18/8 stainless steel and is coated in a durable finish. Leak Proof Straw Lid: Our BPA-free kids' water bottle with straw lid is leak-proof when the nozzle is in the closed positionCupholder Friendly: The 10oz-22oz Summit water bottles fit in most cup holders.  Not intended for Hot Liquids: Pressure may build in the bottle causing leaks or spills.  Care: Bottles should be hand washed. Straw lid is top rack dishwasher safe and should be washed in the open position.Not for children under 3 years old.US Patent Pending