Riding a bike and working out are smart things to do, but drinking water from a plastic container exuding chemicals many believe to be harmful is about as smart as riding a bike in high heels.

There’s a whole lotta controversy going on vis-a-vis Bisphenol A (abbreviated BPA), a chemical that mimics estrogen and thus, opponents claim, could induce hormonal responses. BPA leaches out of certain plastic bottles very fast when exposed to hot liquid, studies say.

So if you leave a plastic bottle full of water in your car on a hot summer day … well, get the idea? In the interests of “better safe than sorry,” some folks are avoiding bottles made from certain types of plastic.

If you (understandably) don’t want to use a glass bottle when biking or hiking or working out at the gym, cuz it might break, CamelBak (those awesome folks who make soft water containers for cyclists to wear on their backs) has come up with a BPA-free water bottle. Check it out! (Photo: faster panda.)