The Owala FreeSip Water Bottle is created for convenience, allowing you to quench your thirst on the go! Its triple-layered stainless steel insulation keeps your drinks cold for up to 24 hours, and the FreeSip lets you choose your own adventure--hold upright to sip through the built-in straw or tilt back to swig through the wide-mouth opening. To open, just push the button to flip the top open. When you're done, close the strap and secure it with the strap that locks in place, making the FreeSip 100% leakproof (and it keeps out germs). There's no need to unscrew the lid every time you need to fill up--filling through the wide-mouth opening makes it easy and convenient! The Owala FreeSip Water Bottle is crafted for people with an active lifestyle and is great at the gym, at the office, and wherever else your day takes you. When it is time to clean, the lid and straw are dishwasher safe while the cup should be hand-washed to keep it looking and functioning at its best.