Honma · Golf Balls & Equipment
HONMA TW-S Golf Balls
No known PFAS risk. Limited brand transparency on materials.
Urethane cover and synthetic rubber core use standard materials without known PFAS treatments. Brand makes no PFAS claims.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Urethane cover, synthetic rubber core and layer
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.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Urethane cover degradation and particle shedding
Urethane is chemically stable and does not fragment into microplastics or toxic particles during normal golf use. Surface wear is cosmetic only and poses no inhalation or ingestion risk.
Synthetic rubber core leaching
Synthetic rubber (butadiene copolymers) used in golf ball cores does not leach into water or soil under normal conditions and is not in direct contact with skin during play.
Heavy metals
No cadmium, lead, or antimony contamination has been reported in golf ball inks or coatings. Industry standards and manufacturing in Japan make this unlikely, though full material transparency is not published by the brand.
Source, FDA ↗Off-gassing of volatile organics
Urethane and synthetic rubber golf balls do not emit formaldehyde or significant VOCs at room temperature and are used outdoors, eliminating any indoor air quality concern.
Bacterial growth or contamination in storage
Golf balls are solid non-porous objects with no water retention or nutrient substrate; they do not support microbial growth and require no sanitization.
The full breakdown
What it's made of and why it matters
Honma TW-S balls feature a urethane elastomer cover bonded over synthetic rubber core and intermediate layers. Urethane is a durable, non-reactive polymer widely used in sports equipment and footwear; it does not off-gas formaldehyde or VOCs under normal use conditions. The synthetic rubber components (typically butadiene or similar) are also chemically stable and pose no leaching risk during typical golf play or storage at room temperature.
The brand's record and disclosure
Honma is a Japanese golf equipment manufacturer with no publicly documented safety recalls or chemical contamination incidents affecting golf balls. The brand does not publish detailed material safety disclosures or third-party certifications for ball construction, which is typical for sports equipment manufacturers. No independent testing data or consumer complaints regarding toxic emissions or coating degradation of Honma TW-S balls are on record.
How it compares in its category
Golf balls across all major brands (Titleist, Callaway, TaylorMade, Honma) use similar urethane-cover and synthetic rubber core constructions with equivalent safety profiles. Honma TW-S sits at the premium tier and is positioned as a tour-level ball; material choices are largely performance-driven rather than safety-differentiated. No category-wide hazards (e.g., volatile organics, heavy metal pigments in covers) have been identified for modern urethane golf balls.
If you buy it
Golf balls require no special handling or maintenance; store at room temperature in dry conditions to preserve cover integrity and performance. The urethane cover will degrade with extended UV exposure and abrasive play over months of use, but this is cosmetic and does not release hazardous materials. Replace balls when surface scuffing or dimple erosion becomes visible, typically after 50-100 rounds depending on course conditions. No heating, washing, or chemical exposure is required or advised.
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
- Honma 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.