riddell power spk+ adult football shoulder pads - rb/db multi-purpose riddell the riddell power spk+ adult football shoulder pads - rb/db feature updated corrugations for improved strength. designed for maximum mobility of the arms, these pads feature a stac system which provides protection to the ac joint while allowing maximum mobility. ripkord technology is a great safety feature that utilizes a cord strategically integrated into the shoulder pad, where in an emergency situation, can be pulled out to separate the pads for easy access to the player. deltoid pads and a pre-attached back plate provide additional protection.