Every aspect of The Slammer was designed around a single movement, The Slam Ball. 9" diameter shell to be weighted at 10, 15, 20, 25, or 30 pounds without the use of a cork system. Tested tough. This ball has undergone an incredible gauntlet of testing. We did our best to run this ball through the unknown and the unknowable but it still came back for more slams. In fact several of our prototypes have been slammed over 5000 times and are still on active duty. That's why we are confident in making the statement below:

 UNCONDITIONAL GUARANTEE; IF YOUR SLAMMER HAS A FAILURE FOR ANY REASON FOR THREE YEARS SIMPLY SEND US THE SHELL AND WE WILL REPLACE IT NO QUESTIONS ASKED.