The 25-ounce FreeFlow is that ideal everyday size, perfect for the car, the trail, or nestled in your backpack for the commute across town. This slim water bottle features a BPA free Eastman Tritan body, with a high-flow-rate, cross-bolt locking FreeFlow lid for a secure, spill-proof carry. The interchangeable lid threading means it will also fit on every size bottle in the Avex Hydrator series. Did you know that by replacing a screw-top bottle with a one-handed drinking lid design like the FreeFlow AUTOSEAL®, you increase your water intake by almost 20%? It’s not just science; it’s science that helps you hydrate.