Our rubber gripper disks fit the RDS™ and attach by way of Velcro® for quick and easy replacement. No more sending in your shoes to have the gripper replaced. Simply pull your old gripper disks off and pop the new ones on and you are ready to go. Lefthanded? No problem with our RDS™ system as you can customize your shoe based on which hand you throw with. The wavy rubber pattern provides maximum traction on the ice.