Ltpgt66fit slam balls are weighted balls that are designed to be slammed into a wall or the floor the no bounce design enables the user to build explosive strengthltpgtltpgtltstronggtfeaturesltstronggtltpgtltulgtltligtinner material sandiron mixltligtltligtouter material pvcltligtltligtweight 5kgltligtltligtcolour blackltligtltulgtltpgtltstronggtdescriptionltstronggtltpgtltpgtideal for crossfit