Simple Modern · Insulated Drink Tumblers
Simple Modern Trek Pivot 30oz Flip Straw Tumbler
Low risk. Stainless steel construction doesn't contain PFAS.
This stainless steel tumbler has a plastic lid and straw with undisclosed composition. The metal core presents no known PFAS risk, though the brand hasn't shared details about plastic components.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Double-wall stainless steel with plastic lid/straw
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What Simple Modern Trek Pivot 30oz Flip Straw is made of, ingredients and materials
The Trek Pivot uses double-wall stainless steel (typically 18/8 food-grade) for the drinking vessel itself, which is chemically inert and does not leach metals or off-gas under normal use. The lid and flip straw are injection-molded plastic, likely polypropylene (PP) or copolyester, materials with low BPA/phthalate risk in cold or warm beverage contact but vulnerable to degradation if exposed to high heat or prolonged direct sunlight. Stainless steel tumblers of this class have an established safety record for beverages; the concern footprint shifts entirely to the plastic components.
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
Polypropylene and copolyester are generally low-risk, but if the plastic is not food-grade or contains recycled content, trace BPA or phthalate softeners are possible. No recalls or test failures are on record for this specific model.
Source, FDA ↗Plastic degradation and microplastic shedding over time
Extended UV exposure, dishwasher cycling, or contact with hot beverages near the plastic lid seams may cause microscopic polymer fragmentation. Risk is low under normal use (cold or room-temp drinks, hand-wash) but increases with heat and age.
Lid seal degradation and contamination
The flip-straw mechanism includes a rubber or silicone gasket; if not cleaned thoroughly or stored damp, bacteria and mold can colonize the seal. This is a hygiene issue, not a chemical hazard, but can render the product unsafe if neglected.
Off-gassing from plastic or adhesives
New stainless steel tumblers with plastic lids may emit trace volatile organic compounds (VOCs) for the first few uses. This is not a chemical hazard but a minor sensory issue; rinsing and airing the tumbler before first use minimizes perception.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Stainless steel corrosion and leaching (acidic beverages)
Food-grade stainless steel (18/8) is highly resistant to corrosion from soft drinks, citrus, or vinegar-based beverages. No leaching of nickel or chromium has been reported for this product category under normal beverage storage.
The full breakdown
The brand's record and disclosure
Simple Modern does not publish detailed material safety disclosures, certifications (e.g., NSF, FDA premarket notification), or PFAS-specific statements on this product line. The brand markets lifestyle drinkware to outdoor/fitness consumers but has not faced significant public safety recalls or controversies on record for this model. Absence of transparency is typical for mid-market drinkware brands and does not indicate a safety failure, only a lack of proactive third-party verification.
How it compares in its category
Stainless steel tumblers with plastic lids occupy a middle-ground safety profile, they avoid the heavy-metal and coating-degradation risks of ceramic or non-stick coated options, and the BPA/phthalate exposure of single-wall plastic bottles. However, they introduce a secondary hazard via the plastic lid/straw, which some premium alternatives (e.g., glass with metal lids, all-stainless caps) eliminate entirely. The Trek Pivot's design is mainstream and carries no known material defects relative to comparable brands like Hydro Flask or Contigo in the same price tier.
If you buy it
Do not microwave the lid or straw; remove them and transfer contents to a microwave-safe vessel. Hand-wash the plastic components with warm (not hot) soapy water; dishwasher heat may accelerate plastic degradation over years of use. Replace the straw and lid seal if they show cracking, cloudiness, or off-odors, as these signal polymer breakdown. Store the tumbler in a cool, dry place away from direct sunlight to minimize plastic UV exposure.
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.
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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.