Great item at a great price to add on to an order.  As an original item it holds up to use.  We've actually worn out the thrower since the plastic breaks down and loses its elasticity.  We've lost a few of the balls in the next door farm field and found them to still be bright in color months later after the weather has gotten to them.  Our Australian Shepherd has yet to puncture them.  The orange color makes it easier to spot then regular tennis balls.