OtterBox · Insulated Drink Tumblers & Travel Mugs
OtterBox Elevation 28 Sport Bottle
Sport bottle, not cookware. Likely lower concern but coating unknown.
OtterBox Elevation is a stainless steel insulated bottle with a water-resistant hydrophobic exterior coating. Stainless base is PFAS-free, but coating chemistry is undisclosed by brand.
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Material
stainless steel with hydrophobic water-resistant coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
cookware is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The Elevation 28 Sport Bottle uses 18/8 stainless steel as its primary vessel, which is corrosion-resistant and does not leach metals under normal beverage storage. The hydrophobic water-resistant coating on the exterior or interior is the material of concern; OtterBox has not publicly disclosed whether this coating contains Teflon-type coating, siloxanes, or other fluorinated compounds. Stainless steel itself poses no known chemical hazard for cold beverage storage.
The brand's record and disclosure
OtterBox is primarily known for protective cases and rugged gear; they maintain minimal public disclosure on material safety certifications or chemical composition for their drinkware line. No major recalls or chemical controversies specific to this bottle model are on record. The brand does not publish PFAS testing results or commitments to PFAS-free coatings, leaving the hydrophobic treatment composition unverified.
How it compares in its category
Stainless steel water bottles are among the safest beverage containers for chemical leaching; this product competes in the mid-to-premium insulated bottle market alongside brands like Hydro Flask and S'well, most of which also use proprietary hydrophobic coatings with undisclosed chemistry. Unlike aluminum bottles, stainless steel avoids aluminum leaching concerns. The unknown coating is a more significant unknown than the substrate itself.
If you buy it
Hand wash or use a bottle brush to avoid coating degradation in dishwashers, as aggressive cleaning can compromise the hydrophobic layer and potentially release coating particles. Do not fill with boiling water repeatedly, as thermal stress can accelerate coating wear. Replace the bottle if the interior coating shows visible peeling, discoloration, or develops an off smell. Store empty and dry to prevent mold or bacterial biofilm growth in the cap or seal.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Hydrophobic coating composition (fluorinated or siloxane)
OtterBox has not publicly disclosed the chemistry of the water-resistant treatment. If fluorinated (Teflon-type coating or similar), coating particles could shed into beverages if damaged; if siloxane-based, volatilization during hot-liquid use is a secondary concern.
Coating degradation and microparticle shedding
Hydrophobic coatings on stainless steel bottles can degrade with repeated washing, thermal cycling, or acidic beverages, potentially releasing coating particles into liquids. This is a material class issue, not unique to OtterBox, but risk increases if coating is thin or low-durability.
Stainless steel leaching
High-quality 18/8 stainless steel does not leach chromium, nickel, or other metals into cold beverages under normal use. Hot beverages may cause trace migration, but levels remain far below regulatory concern thresholds.
Bacterial or mold growth in seals and cap
Any reusable bottle with rubber gaskets or silicone seals can harbor bacteria or mold if not dried thoroughly between uses or if stored damp. This is a maintenance issue, not a material defect specific to this model.
Lead or cadmium in stainless steel or coating
No public recalls or testing data suggest lead or cadmium contamination in OtterBox Elevation bottles. Reputable stainless steel manufacturers maintain strict alloy specifications to exclude these metals.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 62% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Insulated Drink Tumblers & Travel Mugs
Yeti
Rambler Tumbler YETI
18/8 stainless steel, no coating
Lower concern. Bare stainless steel tumbler, no known PFAS risk.
⚠Risky category by default
OtterBox
Elevation 20 Tumbler
Stainless steel tumbler with powder coat or polyester exterior
Lower PFAS concern; stainless steel construction poses minimal risk.
⚠Risky category by default
Contigo
Autoseal West Loop Stainless Steel Travel Mug
stainless steel body, silicone gasket/lid seal
Lower concern. Stainless steel and silicone have minimal PFAS risk.
⚠Risky category by default
More insulated drink tumblers & travel mugs grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.