Compatible Lid:Fits wide mouth sport water bottle, theoretically including Hydro Flask, FIFTY/FIFTY, SimpleModern, Takeya, MIRA, etc. Perfectly fits Hydro Flask 12oz, 18oz, 32oz, 40oz and 64oz wide mouth bottles. Mouth diameter 2.28 inches.
Improved Design:New improved flip lid with button. Press the button, the flip lid will sprang open automatically. One-hand operation makes drinking easier.
Durable Material:Made of high quality materials. All are BPA and Toxin-free, safe for kids and adults.
High Quality:New sealed rubber can provide better sealing, dramatically reduce water leaking issue.
Better Choice:The lid is a good choice for your water bottle, if you have any question, let us know. After-sales Service Team will help you deal with it.