Review on TPU Folding Flask: TRIWONDER Soft Flasks Collapsible Water Bottles For Hydration Pack - Ideal For Running, Hiking, Cycling & Climbing by Jay Meza

I like the product ergonomics. It is easy to carry and the plastic bag is separate from the holder. It has one major problem in that I cannot get the smell and taste out of the plastic bag. I've washed it several times with various cleaners and it still tastes like plastic. I'm going to try and fill it with something other than water to see if that helps.