Ball shaker w/ blue sleeve

This Ball Shaker with Soft Jelly Sleeve is a durable test tube enclosing eight heavy steel balls that make a thumping sensation as they knock against each other. The test tube shaft is nearly 1" in diameter and 5.75" long. With the removable soft jelly sleeve in place, it measures 6" x 1.375". The sleeve is ridged and veined. Shake your booty for thumping vibrations!