Sample - 12 oz. Sherpa Vacuum Tumbler and Slim Can Insulator - Autumn Orange
Low risk. Stainless steel and fleece lack PFAS naturally.
This vacuum tumbler combines stainless steel and sherpa fleece, neither containing known PFAS. No coating treatment was found that would add PFAS.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel tumbler with sherpa fleece insulator
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Sample - 12 oz. Sherpa Autumn Orange is made of, ingredients and materials
This tumbler uses food-grade stainless steel (typically 18/8 or 304 grade) as the inner and outer walls, which does not leach metals under normal use conditions. The sherpa fleece insulator is polyester-based synthetic fabric bonded to the steel shell; polyester itself is chemically stable at room temperature and poses no leaching risk. The lid and any gaskets are typically silicone or plastic (material not specified in product details), which can be a minor concern only if exposed to sustained high heat above 160F. The tumbler is designed for cold and warm beverages, not boiling liquids, keeping thermal stress on materials minimal.
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
BPA & bisphenols
The product details do not specify the lid material; if it is polycarbonate or older polyester, thermal stress from hot beverages could release trace BPA or phthalates, though risk is low at recommended temperatures below 160F.
Source, FDA ↗Mold or bacterial growth in insulation
Moisture trapped between the stainless steel and fleece insulator can promote mold growth over months if the tumbler is not fully air-dried after washing. This is a hygiene and odor issue, not a chemical hazard, but mold exposure should be avoided.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Fleece fabric dye or finish chemicals
Polyester fleece in this color (autumn orange) is typically dyed with acid dyes, which are not classified as toxic when properly fixed. No formaldehyde finishes or banned azo dyes are standard in commercial sherpa fleece production, and no recalls for textiles are on record.
Stainless steel leaching (nickel, chromium)
Food-grade stainless steel (18/8) does not leach nickel or chromium under normal beverage conditions (room temperature or warm drinks). Concern would only arise with prolonged contact with acidic liquids or boiling water, both outside normal use.
Adhesive off-gassing between fleece and steel
Industrial adhesives used to bond the fleece to the tumbler are typically solvent-free or low-VOC in modern drinkware production. No off-gassing risk is documented for this product category at room temperature.
How is this PFAS grade calculated?
The brand's record and disclosure
The brand is a California-based luggage and drinkware company with no publicly documented safety recalls or compliance violations related to this product line. The brand has not issued explicit PFAS-free certifications but does not appear in watchdog databases for chemical safety controversies. No third-party testing results for this specific tumbler are publicly available. The company's silence on chemical disclosures is typical for mid-market drinkware manufacturers, not a red flag.
How it compares in its category
Insulated tumblers with stainless steel construction and fabric sleeves are among the lowest-risk beverage containers on the market. This product sits in the mainstream segment alongside brands like Hydro Flask and simple store-brand options; all use similar stainless steel and polyester insulation strategies. The sherpa fleece is a comfort feature, not a safety liability, as polyester does not off-gas or migrate into beverages at normal temperatures. Compared to ceramic travel mugs (potential lead in glazes) or plastic-lined aluminum (BPA or coating risk), stainless + fleece presents lower concern for these particular hazards.
If you buy it
Hand wash the tumbler and lid rather than subjecting them to dishwasher heat cycles over years, which can degrade any rubber gaskets. Do not fill with liquids above 160F to avoid stressing the fleece adhesive or any plastic components in the lid. Inspect the fleece annually for detachment or mold growth (moisture trapped inside); air dry completely after cleaning. Replace the tumbler if stainless steel shows dents that create crevices where bacteria could lodge, though this is a physical durability issue, not chemical.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Sample - 12 oz. Sherpa Vacuum Tumbler and Slim Can Insulator - Autumn Orange?
- Stainless steel bottle, stainless steel cap
- The brand calls it PFAS-free, which we have not verified
- Powder-coat cap degradation over time
3 hazards checked on this product, all on its full breakdown.
- Stainless steel body, powder-coat finish
- The brand calls it PFAS-free, which we have not verified
- Powder-coat finish degradation
3 hazards checked on this product, all on its full breakdown.
- Stainless steel bottle, plastic cap and silicone gasket
- The brand calls it PFAS-free, which we have not verified
- Silicone gasket degradation and leaching
3 hazards checked on this product, all on its full breakdown.
More insulated drink tumblers 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.