27oz Wide Water Bottle with Loop Cap vs Kids FreeSip Stainless Steel Water Bottle: which is safer?

Klean Kanteen 27oz Wide Water Bottle with Loop Cap is our pick: better on PFAS and on the overall hazard picture.

Our pick

Klean Kanteen

27oz Wide Water Bottle with Loop Cap

PFAS grade

A 100/100

Overall grade

B 88/100

Verdict

Buy

Hazard flags

⚑ 3

Material

18/8 stainless steel, no interior coating

Confidence

92%

PossibleNickel leaching from stainless steel

PossibleSurface corrosion and pitting over time

PossibleBacterial growth in cap seals

Why this gradeBuy

Owala

Kids FreeSip Stainless Steel Water Bottle

PFAS grade

A 100/100

Overall grade

B 82/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Stainless steel interior, plastic cap/spout

Confidence

72%

PossiblePlastic cap/spout composition (BPA, phthalates, migration)

ReportedBacterial growth in cap seals and spout mechanism

PossiblePlastic off-gassing (VOC, odor)

Why this gradeBuy

Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

More portable water bottles: see the full ranking