Reduce · Insulated Drink Tumblers
Reduce Cold1 24oz Stainless Steel Tumbler with Handle & Straw
Lower PFAS concern, stainless steel core product.
Reduce's stainless steel tumbler contains bare stainless steel, which is inherently PFAS-free. Handle and straw materials are unspecified, adding minor uncertainty.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel, plastic handle and straw
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
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 Reduce Cold1 tumbler uses food-grade stainless steel (typically 18/8 or similar) for the main vessel, which is chemically inert and does not leach metals into beverages under normal use. The plastic handle and straw introduce possible exposure points, though these are not immersed in liquid during typical use. Stainless steel's low reactivity makes it one of the safest beverage container materials available for daily hydration.
The brand's record and disclosure
Reduce has not made public statements about PFAS testing or material certifications for this product line. The brand does not appear on major recall lists for chemical safety issues related to tumblers. No third-party independent testing results are publicly available for this specific model, so claims about safety rely on standard material assumptions rather than verified testing.
How it compares in its category
Stainless steel tumblers are among the safest beverage containers relative to ceramic-glazed or plastic-lined alternatives. Most competitors in this price and feature range (handle, straw, insulation) use comparable stainless steel construction with similar plastic accessories. This product does not appear to have unusual material choices that would set it apart as higher or lower risk than other mainstream tumblers.
If you buy it
Avoid prolonged contact between hot beverages and the plastic handle to minimize any volatile off-gassing. The straw and handle are replaceable wear items; discard them if cracks or discoloration develop, as degraded plastic can shed microparticles. Hand wash rather than dishwasher to extend the life of plastic components. The stainless steel core itself should remain safe indefinitely with normal care.
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 handle and straw degradation
Repeated thermal stress or dishwasher cycling can cause plastic components to crack, discolor, or degrade over time, potentially releasing microplastics or odors. No specific degradation data for Reduce's proprietary plastics is publicly available.
Plastic leachables from handle/straw materials
The brand does not disclose the specific polymer type (PP, HDPE, ABS, etc.) or confirm BPA/BPS absence in the handle and straw. Standard food-contact plastics used in tumblers are typically low-risk, but verification is unavailable.
Stainless steel corrosion or pitting
Food-grade stainless steel resists corrosion under normal beverage use. No reports of rust, pitting, or metal leaching specific to Reduce Cold1 models exist in public records.
Bacterial or mold growth in handle/straw assembly
If the straw and handle are not disassembled and dried thoroughly, moisture can accumulate in joints, promoting bacterial or mold growth. This is a hygiene issue rather than a chemical hazard, but is common in tumbler designs with removable components.
Volatile off-gassing from plastic components when new
New plastic components may release mild odors during initial use. This typically fades within days to weeks and is not known to pose health risk, but sensitivity varies by individual.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% 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
Reduce
Halo Tumbler
Stainless steel and plastic lid
Lower concern tumbler; stainless steel is inherently PFAS-safe.
✓Naturally PFAS-free material
Cuppa
To Go Tumbler
Stainless steel with plastic lid
Lower concern. Standard tumbler with no known PFAS risks.
✓Naturally PFAS-free material
Klean Kanteen
Steel Pint
18/8 stainless steel, bare metal
Lower PFAS concern. Bare stainless steel container, no coatings.
✓Bare metal or glass, no coating at all
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.