Review on TRIWONDER Collapsible TPU Soft Flasks For Hydration Pack - Ideal For Running, Hiking, Cycling, And Climbing Sports Water Bottles by Tim Curd

I purchased 2 of these flasks and they taste absolutely horrible after washing them multiple times thoroughly with a bottle brush (I saw someone else had written this in the reviews, but ignored it thinking they did not do a good enough job and bought them anyway. I was wrong). Such a strong plastic flavor that I have never experienced with any other soft flask. The flavor gets worse as the plastic heats up throughout the day which is worrisome.Also, the bite valves must be smaller than normal because it is more difficult to get enough water, very little will flow out. Not worth trying to save the money on these, go purchase the better quality versions.