BioPlastics Water Purifier Bottle 18.5oz 55cl vs 27oz Wide Water Bottle with Loop Cap: which is safer?

Where these two actually differ

• We flag Microplastic shedding from bioplastic degradation, Bacterial/fungal biofilm growth in activated carbon filter, Leaching of bioplastic monomers and additives and Ineffective contaminant removal without maintenance on the and not on the Klean Kanteen.
• We flag Cap or closure contamination and Bacterial or mold growth from moisture retention on the Klean Kanteen and not on the .
• The is Bioplastics (unspecified type) with activated carbon filter where the Klean Kanteen is 18/8 stainless steel, no interior coating, which is most of the difference in these two grades.
• The gap is 30 points, wide enough that this is not a close call, and the Klean Kanteen is the one to buy.
• We are less certain about the grade, at 45% confidence against 92%, because it discloses less.