Glass Breaks, Mostly by accident. I sure have broken a bit of glass in my time... lol Whenever it happened I knew if it broke because of me or was just bad glass. We are responsible adults here and will stand behind our products being the best possible....... BUT! ... If something happens in transit or you know it was the straws fault that it broke and not yours, we are truly sorry and will replace it for you. Just send an email to Motherearthstraws@gmail.com with a picture and story for us to post of the sad event and what size and kind of straw it was:( We will then send you a link to pay the shipping and your replacement will be speedily sent out!