Ball was described by manufacturer as high visibility and it was. (The racquetball court I play on has a glass rear wall with a dark background behind it, making a dark colored ball hard to see coming off the back wall.) The balls are not as lively as the Penn blue balls I previously used, however.

Haven't found any negatives yet

Great service and prices! Can't beat them!

Excellent visibility on back glass with poorly lit background. Super fast balls