Review on Polar Bottle Cenote Water Storage Bladder: Optimal Hydration Solution for backpacks and sleeves by Todd Mamat

We used these to replace the hydration bladders that came with some of the bags we bought through our school group for the summer group. The smell of plastic in them was terrible and the taste didn't wash out. They have also been confirmed to be free of BPA or phthalates like this particular product. 2 liters was practical since the backpacks were 1.5 liters in volume, but it still worked. Both the bite valve and hose are made from food-grade BPA/phthalate materials. Very easy to clean. Odorless and tasteless.