Vacuum Insulated: Keep your drink cold for hours with the double-walled, insulated Summit water bottle Durable: Our Summit water bottles are made from 18/8 kitchen-grade stainless steel and coated in a durable finish Leak-Proof Straw Lid: Our BPA-free Summit Straw Lid is leak-proof when the nozzle is in the closed position; US Patent Pending The 14-22oz Summit water bottles fit in most cupholders. The 32-84oz Summit water bottles do not fit in most cupholders Not intended for Hot Liquids: Pressure may build in the bottle causing leaks or spills. Bottles should be hand washed and straw lid is top rack dishwasher safe