You deserve options when it comes to hydration and that's why Owala 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. 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 (and keep out germs) If you're one of those people who likes bottles that spill water everywhere, you're out of luck... the FreeSip is completely leak proof. | Owala 32oz Stainless Steel FreeSip Water Bottle in Grey | Size 32 oz