I like the idea of these bottles. I purchased thru the Kickstarter campaign. One of the three I purchased was missing a flap in the lid to keep the water from leaking. They sent a replacement lid no cost. The bottles themselves are not that sturdy. I had a half full bottle fall from Knee height, bottom of bottle and plastic around bottle cracked. Price wise this is a good deal but beware that these bottles are not as sturdy as some others.