Mizuno · Golf Balls & Equipment
MIZUNO Golf Ball RB Tour 1 Dozen 4 Piece White 5NJBT84910 12P New
Golf balls rarely treated with PFAS; no evidence of concern for this product.
Mizuno makes no PFAS disclosure for this golf ball. Golf balls typically lack water-resistant coatings that require PFAS, though cover materials remain unspecified.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Synthetic rubber core, cover composition undisclosed
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What MIZUNO Golf Ball RB Tour 1 Dozen 4 Piece is made of, ingredients and materials
The RB Tour 1 uses a synthetic rubber core (standard for tour-grade balls) with an undisclosed cover composition, likely ionomer or urethane blend. Synthetic rubber cores do not leach significant chemical residues during normal play and are inert at room temperature. The cover material's specific formulation is proprietary across the industry, but ionomer and polyurethane covers have no established safety concerns for hand contact during use.
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.
Cover material chemical leaching
Ionomer and polyurethane covers used in tour balls are chemically stable and do not leach during normal hand contact or play. No established pathway for ingestion or skin sensitization exists under typical use conditions.
Synthetic rubber core degradation and particle release
Synthetic rubber cores are designed to withstand repeated impact and do not fragment, crack, or release microparticles under normal golf play conditions. Environmental degradation occurs over years of outdoor storage, not during use.
Heavy metals
Golf ball covers are painted or molded with pigments, but no lead, cadmium, or other heavy metal contamination has been reported for Mizuno or major competitors. The amount of contact between skin and paint is minimal during play.
Source, FDA ↗Volatile organic compound (VOC) off-gassing
Golf balls may emit trace VOCs during manufacturing and packaging, but balls are not used in enclosed spaces or inhaled; off-gassing is not a practical consumer exposure concern during storage or play.
Bacterial growth or contamination
Golf balls are solid, non-porous after manufacturing, and do not retain moisture or harbor bacterial growth. Outdoor exposure to dirt and water does not create a pathogenic risk for the player.
The full breakdown
The brand's record and disclosure
Mizuno has not published detailed chemical composition or toxicology data for this specific ball model, which is typical for the sports equipment industry. No product recalls or safety complaints are on record for Mizuno golf balls. The company has not made public statements on PFAS use in golf balls, consistent with industry silence on this topic.
How it compares in its category
Golf balls are not regulated as consumer products in the same way as toys, cookware, or textiles; safety standards are limited to performance specs (dimple patterns, compression, distance). The RB Tour 1 sits in the professional/competitive tier where material quality is high. Compared to budget brands, premium balls typically use more stable synthetic materials with fewer degradation concerns.
If you buy it
Store balls in cool, dry conditions away from direct sunlight to prevent cover degradation and color fading over time. Golf balls are designed for impact and are extremely durable; there are no heating, microwaving, or storage risks like food containers. Replace balls when the cover develops cuts, scuffs that affect flight, or visible cracking; this is a performance issue, not a safety issue. Wash with mild soap and water if desired; harsh solvents are unnecessary.
What we don’t know
- Basis
- Model estimate, 45% 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.