Owala 🦈Fin Frenzy🦈 24oz FreeSip BNWT - Still In Original Retail Packaging "You deserve options when it comes to hydration and that's why we designed the FreeSip to let you choose your own adventure—hold upright to sip through the built-in straw or tilt back to swig through the wide-mouth opening. If that isn’t exciting enough, this bottle is ready to spring into action at any time. Just push the button to flip the top open and push back down to lock it shut."