These are purple balls from Penn Technology whose performance and torque are unmatched. These balls have exceptional bounce features that boost them into use for tournaments only. Numerous schools have used the Pro Penn racquetballs for friendly games and recreational play because they are vibration-free.
However, the Pro Penn HD racquetballs may not be the best choice for courts with poor lighting. It is because they are nearly invisible in the dark. The balls are very light and have soft feels that make them just as suitable for an experienced player’s match. nevertheless, these balls are not that durable and so when buying, I would advise you to go for the 12 balls per can for fast replacements.
However, if you feel those are too many, you can buy 4 balls per can. You must have noticed Pro Penn balls tend to have more balls than other brands. Although they are not durable, you can count on their sturdy nature and unmatched bounce.