Simple Modern · Insulated Drink Tumblers
Voyager Tumbler Signature
Low concern. No known PFAS signals in typical tumbler construction.
Simple Modern's plastic and stainless steel design lacks apparent water-repellent or nonstick treatments. The brand hasn't made any public PFAS statements.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Double-wall plastic and stainless steel
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Voyager Tumbler Signature is made of, ingredients and materials
The Voyager Tumbler uses a double-wall plastic exterior (likely polypropylene or co-polymer blend) with a stainless steel interior liner. This construction minimizes contact between beverages and plastic for most drinks, which reduces leaching risk compared to single-wall designs. The stainless steel liner is the primary contact surface for liquids, which is chemically inert and does not leach metals at normal use temperatures.
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.
Plastic degradation and leaching under heat stress
Hot beverage exposure may accelerate outer plastic wall degradation over years of use. Because Simple Modern does not specify maximum temperature ratings prominently, users may inadvertently use the tumbler for hot drinks, increasing leaching risk from thermal stress.
Seal and gasket material composition
Silicone or elastomer gaskets and seals are not disclosed by the brand. If cheap elastomer materials are used, they could leach over time with acidic beverages or prolonged use, though this is not documented for this model.
Microplastic shedding from wear
Double-wall plastic can degrade internally over many years of temperature cycling and mechanical stress, potentially releasing microplastics into beverages, though this is a long-term wear mechanism not specific to Simple Modern.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
BPA & bisphenols
No public recalls or testing reports document BPA or phthalate leaching from Simple Modern Voyager tumblers. Most polypropylene and modern co-polymers used in this category are BPA-free, though the brand does not confirm material specs or testing.
Source, FDA ↗Stainless steel interior corrosion or coating flaws
No reports of rust, pitting, or nickel leaching from the stainless steel liner in Voyager tumblers under normal use. Stainless steel food-contact surfaces are well-established materials with no hazard of this kind on record if properly manufactured.
The full breakdown
The brand's record and disclosure
Simple Modern does not publicly disclose detailed material sourcing or third-party safety certifications on most product lines. The brand has no known recalls or documented safety violations specific to the Voyager line. No formal BPA, phthalate, or manufacturing transparency statements appear on their website, which is typical for the mainstream drinkware category but leaves some disclosure gaps.
How it compares in its category
This tumbler sits in the mid-market insulated drinkware segment alongside Hydro Flask, YETI, and Contigo. Like most competitors, it relies on plastic-steel hybrid construction rather than all-metal designs, which is more cost-effective but introduces minor plastic contact. The stainless steel interior is a strength; many cheaper alternatives use plastic-only interior walls, which increases leaching potential over time.
If you buy it
Use this tumbler for cold or room-temperature beverages; do not fill with hot liquids above 140F (60C), as heat can increase plastic degradation and leaching from the outer wall. Hand wash rather than dishwasher to preserve coatings and seals. Inspect the plastic exterior annually for cracks, clouding, or separation from the steel liner; replace if structural damage is visible. Avoid abrasive scrubbers that can compromise any protective coatings on the plastic.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Simple Modern has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Insulated Drink Tumblers
Klean Kanteen
20oz TKWide with Café Cap, Tofu
- 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. See all of them.
Klean Kanteen
16oz Rise Tumbler
- 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. See all of them.
Klean Kanteen
Insulated TKWide Cap
- 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. See all of them.
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.