They are bright and quite durable, a good size and weight for juggling The slow fade is perfect as it doesn't dazzle my eyes like a strobe ball does. I like that they don't turn on accidentally when I put them in my backpack. Unlike beanbags, they do carom off into parts unknown when they collide. They have a good bounce (maybe %50 - %70) not good enough for bounce juggling but good enough for a few bounce tricks.
Pros: Bright, Durable, good weight, juggles well
Cons: None really, they fly off when they collide but the bounce can be useful too.
This review was written in the old system and had content requirements that are different than reviews written today.