Review on Ultra-Light, BPA-Free Collapsible Water Bottle For Backpacking - Hydrapak Flux (1.5L) With Spill-Proof Twist Cap In Mammoth Grey by Erik Gerber

If you plan on ONLY drinking water from this, it's probably great. However, I mixed a BCAA drink in it for a hike I did a week ago, and the smell is still in the bottle, after numerous washings.I've thoroughly washed it out over twenty times, and the smell simply will not go away. Why they'd make this bottle with a substance that permanently absorbs a smell and never lets it go is beyond me. It makes no sense. You'd think they would've figured out this flaw in beta testing. Unbelievable.