Cuppy · Insulated Travel Drinkware
Asobu Superb Sippy
Likely lower concern, but brand discloses no PFAS information.
Asobu sippy cups appear to use standard plastic and silicone materials without known PFAS-associated treatments. Brand provides no PFAS disclosure or testing data; limited public information available.
Shop Cuppy on Amazon →Material
plastic/silicone sippy cup construction
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 Asobu Superb Sippy combines plastic (likely polypropylene or similar) with silicone spout and valve components. Silicone itself is generally stable and low-leaching, but the plastic housing is the primary concern for chemical migration, especially during repeated washing, heating, or prolonged contact with liquids. Sippy cups experience frequent thermal stress from hot liquids and dishwasher cycles, which can degrade plastic integrity over time and increase leaching risk.
The brand's record and disclosure
Cuppy/Asobu maintains a silent stance on PFAS and chemical testing, no public independent testing results, safety certifications, or manufacturer disclosures are readily available. The brand does not publish material safety data sheets or claim BPA-free status prominently, which is a red flag relative to modern sippy cup market standards. No established recalls or safety controversies are on record for this specific product.
How it compares in its category
Most mainstream sippy cup brands now explicitly claim BPA-free and publish test results; Asobu's silence puts it in a lower-transparency tier. Comparable products from Munchkin, Dr. Brown's, or OXO typically disclose materials and certifications. Without public testing data, this product sits in a middle-risk position: better than unlabeled generic imports, but behind brands with transparent chemical profiles.
If you buy it
Hand wash only, avoid dishwasher heat and prolonged hot-liquid storage to minimize plastic degradation. Replace the cup every 6-12 months, or immediately if visible cracks, cloudiness, or odor develop. Inspect the silicone spout regularly for wear or tears. Do not expose to direct sunlight for extended periods, as UV can weaken plastic and accelerate leaching. Consider using stainless steel or glass alternatives if your child will be using a sippy cup for more than a year.
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.”
BPA and other bisphenols in plastic housing
No public test results or manufacturer claim of BPA-free status. Polypropylene-based plastics in sippy cups can leach trace BPA or BPS under stress; risk increases with heat and repeated washing. Absence of certification does not confirm safety.
Phthalates in plastic softeners
Plastic components may contain phthalate plasticizers to improve flexibility, especially in valve and spout areas. No manufacturer testing disclosure available for this product. Phthalates can migrate into liquids, particularly fatty drinks like milk.
Plastic degradation and microplastic shedding
Repeated dishwasher cycles, hot liquids, and prolonged use cause plastic stress and microscopic surface wear. Sippy cups see heavy thermal and mechanical cycling, making degradation over time a predictable hazard class for plastic-based designs.
Silicone spout/valve integrity over time
Generic sippy cup spouts and valves wear, crack, or develop biofilm if not cleaned thoroughly. While silicone itself is low-risk, degraded or contaminated silicone components can harbor bacteria and become ingestion hazards. Regular visual inspection is essential.
Heavy metals in pigments or plastic additives
No reported contamination or test results specific to Asobu products. However, no independent testing is publicly available, so absence of reports does not confirm absence of risk in low-transparency brands.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 60% 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.
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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.