Apart from using them to keep us hydrated as we went about or day, we ran them through multiple tests in our lab. We tested filling them from faucets, fountains, and streams, checked their potential to leak, and loaded them with powdered energy drinks to see if they retained any flavor after rinsing them out. We had several taste testers drink from each bottle and report how the bottle materials affected the taste of tap water. We timed how long it took to wash them by hand and weighed each bottle with our own precise scale. To test their durability, we filled and dropped the bottles from a height of three and a half feet onto a hard surface, then checked for damage. For example, check out this drop test:
For more details about how the bottles fared, go to our main review.