complete an entire circle! Then watch as they try to make it spin 2 times...then more. Even little guys can get it right away! A well thought-out training devise for building power into your swing. And yes, that is Big League power hitter Lance Berkman in the demo...and no, he doesn't need the money...lol! The Power Bag is available at : baseballtips.com ... "muhl power bag" hitting "power hitting" "batting coach" "jp baseball" baseballtips "baseball tips" "power hitters" "homerun hitters" " ...