Blocker Sleeve Ball KitThe Blocker Sleeve Ball Kit provides extra hook and loop balls, as well as bouncing balls, for your Blocker Sleeve Goalie Training Aid. The Blocker Sleeve is a simple yet extremely effective tool that allows goalies to devote more time to develop their reaction ability, improve their reaction speed, and have great pre game warm up sessions. No longer to you have to chase the ball down the hall if you miss it, simply strap on your Blocker Sleeve and