On Course 36 Piece Practice Golf Balls
Golf balls pose minimal PFAS risk; standard choice.
OnCore practice golf balls use typical rubber and synthetic covers without disclosed water-repellent coatings. No known PFAS risk signals exist for this product category.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Synthetic rubber cover over solid 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.
Synthetic rubber degradation and off-gassing
Prolonged UV exposure or heat can cause synthetic rubber to break down and release volatile organic compounds; risk is low for typical outdoor practice use and proper storage, but accelerated in hot vehicles or direct sunlight over months.
Microplastic shedding during use
Impact, wear, and weathering of synthetic rubber covers can generate fine rubber particles that may shed into soil or water during outdoor play. Environmental impact is documented for golf-ball waste streams, but human health ingestion risk is minimal for end users.
Water absorption and mold growth if stored wet
Synthetic rubber does not absorb water, but seams or micro-cracks can trap moisture internally; prolonged damp storage without drying may promote mold on surface or in core, though this is avoidable with basic care.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Skin contact sensitivity or dermatitis
Synthetic rubber is generally inert and non-allergenic, and no skin irritation complaints are on record for this product or brand. Risk exists only for individuals with documented rubber or polymer sensitivities, which are rare.
Heavy metals
Practice ball coatings typically use organic dyes rather than heavy-metal pigments; no testing or recalls document cadmium, lead, or chromium in On Course or comparable budget balls.
Source, FDA ↗The full breakdown
What it's made of and why it matters
On Course practice golf balls use a synthetic rubber cover bonded over a solid rubber or polymer core, a standard construction for recreational-grade balls. This material avoids the dimple-coating complexity of premium balls and reduces the number of chemical processing steps. Synthetic rubber is stable at room temperature and typical use conditions (outdoor play, storage in moderate climates), meaning off-gassing or leaching into skin contact is not a documented concern for this product class.
The brand's record and disclosure
OnCore (the parent brand) does not publicly disclose materials testing, third-party certifications, or chemical compliance statements for its practice-ball line. No recalls, safety complaints, or manufacturing controversies are on public record for On Course branded balls. The brand's silence on material sourcing and testing is typical for budget practice-ball manufacturers and does not indicate a known problem.
How it compares in its category
Practice golf balls occupy the lowest tier of manufacturing scrutiny compared to tournament-grade balls, which sometimes include ionomer covers and proprietary core chemistries. Synthetic rubber covers are chemically simpler and more forgiving than layered premium constructions. On Course balls are broadly comparable to other mass-market practice sets (Callaway, Titleist practice lines, generic range balls) in material profile and lack of disclosed testing.
If you buy it
Store balls in a cool, dry place away from direct sunlight to prevent rubber degradation and discoloration over time. Inspect covers annually for cracks, cuts, or delamination; discard balls with visible damage, as water ingress can degrade the core. Do not expose balls to sustained heat (hot car trunks, near heaters) as synthetic rubber can soften or off-gas volatile compounds. Wash hands after handling if you have sensitive skin, though allergic reactions to synthetic rubber are uncommon.
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
- 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.