prash231 5 I was looking for a reaction or reflex ball to increase my hand & eye coordination.I found it on amazon. Considering the cost I considered appropriate and ordered it.When I opened the parcel, I could smell the ball odor which was kind not good.Later on in one day it went away. Not so much to worry about.I gave 5 star only because it has helped me to increase my reflex speed.I would love to see more rebound velocity from this ball .