Runners across the country are always searching for the perfect water bottle to stay hydrated — and Flexr Sports has the answer. Their BPA-free sports water bottle with the first disposable and fully biodegradable liner so it is fresh and clean every time you use it. Flexr Sports is a great way to stay hydrated while helping to protect the environment, and they look good. Flexr has runners, hikers, swimmers and cyclists in mind. and the bottle comes in 6 different colors.