Corkcicle · Insulated Travel Mugs
Pure Taste Insulated Coffee Mug
Lower concern. Stainless steel core unlikely to contain PFAS.
Corkcicle's insulated mug uses stainless steel and cork, materials without inherent PFAS risk. Brand makes no PFAS claims; plastic lid composition unspecified but typical non-treated lids pose minimal risk.
Shop Corkcicle on Amazon →Material
Stainless steel body, cork accents, plastic lid
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
Category baseline
other 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 Pure Taste mug uses a stainless steel double-wall body, which is chemically inert and does not leach metals or off-gas under normal drinking conditions. The cork accents are a natural material that does not release volatile compounds. The plastic lid is the only component requiring scrutiny; it is likely polypropylene or similar food-grade thermoplastic, which is stable at typical beverage temperatures (below 80°C) but can degrade if exposed to boiling liquids or heated repeatedly in dishwashers.
The brand's record and disclosure
Corkcicle does not publicly disclose detailed material sourcing or third-party testing for most of its drinkware line. The brand has not faced documented recalls or safety controversies specific to the Pure Taste mug. No certifications (FDA, NSF, or BPA-free claims) are prominently advertised on public product listings, which represents a transparency gap rather than confirmed risk.
How it compares in its category
Insulated mugs with stainless steel bodies are among the safest beverage containers because stainless steel is non-reactive. Corkcicle's design is comparable to Hydro Flask and S'well in material choice. The cork accent is a differentiator that avoids synthetic grip coatings, reducing chemical exposure risk compared to rubber or silicone-lined alternatives.
If you buy it
Hand wash the plastic lid in warm water; do not place it in the dishwasher on the hot cycle, as repeated heat cycling can weaken the plastic. Never pour boiling liquid directly into a cold mug, as thermal shock may stress the seal or lid. Inspect the lid annually for cracks or discoloration; replace if degradation is visible. The stainless steel body is durable and does not require special care beyond normal rinsing.
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.”
Plastic lid leaching (BPA/BPS/phthalates)
The plastic lid material is not publicly specified. If polypropylene (PP #5), risk is minimal at normal use temperatures; if mixed or recycled plastic, trace leaching is possible but unlikely at room temperature or warm beverage (below 60°C).
Thermal stress on plastic components
User reports and product reviews indicate occasional lid cracking or seal failure after thermal cycling (hot-fill, cold-storage cycles). This is a durability issue that does not directly cause chemical release but increases replacement frequency.
Stainless steel body corrosion or metal leaching
Stainless steel (typically 18/8 grade) is chemically stable in contact with water and beverages. No documented cases of nickel or chromium leaching from Corkcicle mugs under normal use.
Cork contamination or mold growth
Cork is hygroscopic and can retain moisture if not dried after washing. Prolonged dampness may promote microbial growth in the cork-metal junction, though this poses low risk if the mug is air-dried between uses.
Off-gassing from adhesive or sealant
No evidence of volatile organic compound (VOC) emissions from the assembly adhesives in this product line; stainless steel and cork do not off-gas under normal conditions.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% 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 Travel Mugs
Corkcicle
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More insulated 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.