X5 Braid Line vs SuperPower ColorShield Braided Fishing Line: which is safer?
Berkley X5 Braid Line is the clear pick. KastKing SuperPower ColorShield Braided Fishing Line carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Berkley
X5 Braid Line
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleMicroplastic shedding from fiber degradation
ReportedUV degradation and embrittlement
PossibleMold and bacterial colonization
KastKing
SuperPower ColorShield Braided Fishing Line
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCoating integrity and microplastic release
PossibleUndisclosed colorant or pigment composition
PossiblePersistent polymer accumulation in aquatic ecosystems
Where these two actually differ
- We flag Microplastic shedding from fiber degradation, UV degradation and embrittlement, Mold and bacterial colonization and Surfactant or processing residues in braiding lubricants on the Berkley and not on the KastKing.
- We flag Coating integrity and microplastic release, Undisclosed colorant or pigment composition and Persistent polymer accumulation in aquatic ecosystems on the KastKing and not on the Berkley.
- The Berkley is braided polyethylene fishing line where the KastKing is Braided polyethylene or nylon core with color-coated finish, which is most of the difference in these two grades.
- The gap is 35 points, wide enough that this is not a close call, and the Berkley is the one to buy.
- We are less certain about the KastKing grade, at 45% confidence against 72%, because it discloses less.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More fishing tackle & gear: see the full ranking