Get out there and stay hydrated with our simple sip straw lid!  Leak resistant spout that offers instant access to your beverage in one easy flip motion. Use provided ruler to measure and cut straws to desired length. 2 straws included! Not leak proof. Not intended for hot or carbonated beverages. Does not fit classic Tumbler collection. Features:Fits all MiiR Travel Tumblers & Wide Mouth collectionPolypropylene #5 (BPA free)Leak resistantTop rack dishwasher safeEasy to cleanLifetime warranty Product to Project®Every MiiR product sold helps fund trackable giving projects. Just enter your code.  *Note that changes in elevation and exposure to high temperature environments may create pressure inside your bottle. Safely release it by slightly twisting the Straw Lid open and closed before opening the spout.