Mizuno · Golf Balls & Equipment
MIZUNO Yellow Mix used golf balls - Foundgolfballs.com 5A (5 Dozen)
Used balls, no public PFAS disclosure; low inherent risk but limited transparency.
Golf balls are typically rubber and polymer with minimal PFAS concern by category. Mizuno makes no public PFAS claims, and no lab data exists for this product line.
We flunk more products than we pass. This one earned its grade. How we grade
Material
rubber/polymer golf ball cover and core
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Teflon-type coating or Teflon-family coating coatings (dimple treatment)
Modern golf ball covers may include Teflon-family coating or Teflon-type coating-based dimple treatments for water repellency. Mizuno does not disclose this. Used balls present minimal risk because any volatile Teflon-type coating fumes were released during manufacturing; however, scuffing or grinding used balls could theoretically disturb coating residue. This is not a documented hazard for this product, but transparency is absent.
Microplastic shedding from worn cover
Used golf balls with degraded covers may shed small polymer particles during play, particularly if scuffed or cracked. This is a minor environmental concern (microplastics in turf and waterways) rather than a direct health hazard to the user. No specific data exists for Mizuno balls, but it is inherent to worn synthetic ball covers.
Mold or bacterial growth from storage/water exposure
Used golf balls stored damp or in humid conditions may develop mold in cracks or surface imperfections. This is a hygiene concern (potential skin contact during prolonged grip) rather than a chemical toxicity issue. Rinsing and dry storage prevent this.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Heavy metals
The 'yellow mix' designation refers to visible color on the ball cover. No documented cases of lead, cadmium, or other heavy metal contamination in Mizuno golf ball dyes have been recorded. Golf balls are not designed for skin absorption and are handled briefly during play, limiting exposure routes.
Source, FDA ↗Volatilization of unreacted oligomers or plasticizers
New synthetic polymer balls off-gas slightly during initial manufacture and storage; used balls have completed this phase. No reported health incidents or off-gassing complaints specific to Mizuno golf balls exist in public records.
The full breakdown
What it's made of and why it matters
Mizuno golf balls use a synthetic rubber/polymer cover (typically surlyn or urethane) over a rubber or synthetic core. Used balls from legitimate recyclers like Foundgolfballs.com have already undergone weathering and wear that would have released any volatile compounds during manufacture and initial use. The material itself is chemically stable and not designed for ingestion or skin contact during normal play, so leaching into skin or mouth is a low-risk pathway.
The brand's record and disclosure
Mizuno does not publicly disclose detailed material safety or chemical composition data for golf balls. No established product recalls, lead/cadmium contamination, or manufacturing safety controversies are documented for Mizuno golf balls in public records. The brand's silence on PFAS use in ball covers is consistent with the golf industry's general lack of transparency on Teflon-family coating coatings, though used balls are already past their primary off-gassing phase.
How it compares in its category
Used golf balls from certified recyclers carry lower inherent chemical risk than brand-new balls because volatile off-gassing from manufacturing has already occurred during initial storage and play. Mizuno is a reputable manufacturer with no known quality control issues specific to golf ball toxicology. This product is functionally equivalent to other used 5A balls from major brands in terms of chemical stability.
If you buy it
Used golf balls require minimal special handling; rinse with water before play if visibly dirty. Store in a dry location to prevent mold growth in any surface cracks (not a chemical hazard but a hygiene concern). There is no heat exposure risk during normal golf play. Replace balls if the cover tears deeply, as exposed core material is not a toxicity concern but may affect performance.
What we don’t know
- Basis
- Model estimate, 55% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Mizuno has made none
Formulations change between production runs, so check the current label. How we grade.
More golf balls & equipment 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.