Holy Trainer version 4 Rings


The HolyTrainer is made of a biosourced resin. This material is being used more and more in very diverse areas such as aviation or electronics. Biosourced resin replaces traditional petroleum-based resins and is 100% natural and durable.



Holy Trainer version 4 Rings available for separate purchase. There are five separate sizes (36mm, 40mm, 45mm, 50mm, and 55mm) in any of the three current colors (clear, baby pink, and black). All are compatible with the V4 tube, but are not compatible with earlier versions.

Additional information


Clear, Baby Pink, Black


36mm, 40mm, 45mm, 50mm, 55mm


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